Jeffrey Glenn - An introduction to Tech Diving

Jeffrey Glenn - An introduction to Tech Diving

Jeffrey is a dive industry titan specialising in all areas of technical, cave and rebreather diving. He’s logged more than 20 years experience at the pointy end of diver and instructor development, and is also the owner of GoPro Asia and Bans Technical Diving, based on Koh Tao, Thailand. 

His qualifications include multi-agency accreditations, such as a PADI Course Director and Technical Instructor Trainer, TDI/SDI Course Director, Instructor Trainer for RAID International (which is the world’s fastest growing and most dynamic dive agency), Raid Cave 2 Instructor, TDI Full Cave Instructor, and Advanced Trimix Instructor Trainer for all 3 agencies.

Jeff is also an instructor for the world’s 3 leading exploration rebreathers: the JJCCR, the XCCR and the SF2. He’s certified well over 1000 divers in technical, rebreather and cave diving as well as countless technical diving instructors at all levels of their diver training.

Jeff is a member of international dive teams assembled for scientific research and exploration objectives. Two of these currently include Major Projects Foundations led by Dr Matt Carter as well as Bottomline Projects, led by close friend and trusted dive buddy, Mikko Paasi.


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    00:00:00
    Matt Waters: Hey, they dive buddies and welcome to the show.

    00:00:08
    So one of the topics within Scuba diving that I want to get

    00:00:11
    into is technical diving. Now, I've done a lot of diving myself

    00:00:15
    recreational played around with a few of the tech toys but never

    00:00:19
    really delved into it in any depth. So, rather than me

    00:00:23
    jabbering on I thought it would be a good idea to bring on a

    00:00:26
    geezer that knows as much as you need to know about tech diving

    00:00:30
    really. And he can talk us through why people get

    00:00:33
    interested in tech diving. His name is Jeffrey Glen. Jeff,

    00:00:38
    welcome to the show, buddy. How you doing mate?

    00:00:39
    Jeffrey Glenn: Thanks, Matt. Thanks for having me on Scuba.

    00:00:41
    It's nice to see you. Nice to talk with you.

    00:00:44
    Matt Waters: It's been a while it's been a while too long. And

    00:00:47
    how's the how's the surf this morning?

    00:00:50
    Jeffrey Glenn: It's pretty ordinary Bali and wake up call

    00:00:53
    check the surf report. Poor sleeping was head it was

    00:00:58
    enjoyable.

    00:01:02
    Matt Waters: Before we get into any depth Do you want to give

    00:01:04
    the guys that are listening background on your shelf? And

    00:01:07
    you know, how you got into the diving industry and where it's

    00:01:10
    evolved to.

    00:01:11
    Jeffrey Glenn: Okay, yeah, sure, no problem. So Matt. So I

    00:01:15
    started with my open water course in in Airlie Beach close

    00:01:20
    to 30 years ago. So I've been in a dive industry for some time,

    00:01:25
    heading out to the Great Barrier Reef and joined diving as much

    00:01:28
    as I did, I proceeded and moved through the ranks and became a

    00:01:33
    divemaster up there. Enjoyed that travelled the world a

    00:01:37
    little bit, ended up in Egypt, on a liveaboard to Tony Becker's

    00:01:43
    ever go foot in England. And I've just done a live report on

    00:01:49
    the Angelina and I met this guy on the pier, he had a kotel

    00:01:54
    shirt on and I asked him about it. And he told me about it,

    00:02:00
    cool, put that in the memory bank and then went back to the

    00:02:03
    UK worked a little bit more. And then when I decided to go on to

    00:02:08
    become an instructor, I remember that T shirt. So Google Kotel

    00:02:12
    and off I went did my instructor course. And that was in

    00:02:17
    22 2000, march 2000, I went out to Kotagiri my instructor

    00:02:23
    course, the idea the plan was to do my instructor course and then

    00:02:28
    move through to Central America where I could combine my love of

    00:02:32
    surfing and diving and work away in the tropics, but ended up

    00:02:38
    staying on Koh Tao proceeded, proceeded to teach open water

    00:02:42
    courses advanced courses rescue now for a good couple of years,

    00:02:48
    then became a little bored with it so proceeded to become a

    00:02:51
    Odyssey staff instructor and get myself involved with instructor

    00:02:55
    development courses with a couple of the leading cause

    00:02:59
    structures at the time their master Walker and and Jonah

    00:03:02
    Samuelson proceeded to do that. Then went to Kota Kinabalu in

    00:03:07
    Borneo did my city course cdtc with a friend of ours, Guillaume

    00:03:14
    fogless, who's now working for Patty in America, procedure to

    00:03:19
    that for a couple of years instructor development than

    00:03:22
    doubled in the technical diving. Were absolutely fell in love

    00:03:27
    with the challenges and the excitement, that technical

    00:03:30
    diving brought to me. And then just focus on that for the last

    00:03:34
    basically 10 to 15 years.

    00:03:36
    Matt Waters: So yeah, with little island for quite some

    00:03:39
    Jeffrey Glenn: time, quite some time. And the beauty of

    00:03:41
    technical diving is that yeah, you're continually learning. I

    00:03:45
    felt with the recreational sphere, you sort of get to a

    00:03:49
    certain level and the progression just basically

    00:03:52
    stops, there's not too much more you can do in the recreation

    00:03:55
    around that with technical diving, it's it's continually

    00:03:58
    evolving, the technology is continually developing the toys,

    00:04:05
    continually improving, and becoming more enjoyable to use.

    00:04:12
    And so allowing the exploration scope to widen so there's always

    00:04:17
    something to do.

    00:04:19
    Matt Waters: So what was it that actually was it the boredom of

    00:04:22
    of recreational, repetitive instruction? Or was it the

    00:04:28
    attraction of more exploration within within tech diving? I'm

    00:04:32
    trying to just decipher what it is that draws people to

    00:04:35
    technical diving.

    00:04:37
    Jeffrey Glenn: Okay, I think you've you've summed it up

    00:04:40
    nicely there mate. For me personally. It was just the the

    00:04:44
    boredom, the repetition, the mediocrity of just doing the

    00:04:49
    same thing on our DCS, ticking, ticking the boxes on the

    00:04:53
    evaluation cards and and I just felt that I was just there Is

    00:05:00
    this is this is this, there's going to be more to it. And at

    00:05:05
    the same time, I started to develop my technical skills. And

    00:05:11
    that was allowing me to go a little bit further in the

    00:05:14
    overhead environments go a little bit deeper in the racks.

    00:05:18
    And I always came back from a day of technical diving, fully

    00:05:23
    pumped for more. Whereas I can compare that to a day of it sees

    00:05:27
    I was like I'm a guy that continually likes to develop and

    00:05:35
    progress and evolve as, as a human as a diver and technical

    00:05:39
    diving enabled me to do that become better. Because I was

    00:05:44
    challenging myself, I didn't really feel jet challenged up to

    00:05:48
    an RDC it was the same as demo. Repetition. So yeah, to

    00:05:51
    summarise that, Matt. Yeah, it was a repetition. That sort of

    00:05:54
    bored me or the season recreational, whereas the

    00:05:58
    excitement of being able to push my limits further and technical

    00:06:01
    diving is which watch led me to transition fully into technical

    00:06:07
    diver development. Technical exploration.

    00:06:10
    Matt Waters: Yeah, yeah. Now the the amount of people that you

    00:06:15
    taught dive in, and you know, people could account search and

    00:06:19
    all that kind of thing. You've done a few now.

    00:06:23
    Jeffrey Glenn: Yeah, he could say that. You can say that.

    00:06:26
    Yeah, I've probably done more technical diver certs than I

    00:06:29
    have recreational certs. Keep in mind when I was working as a

    00:06:34
    recreational instructor, I was representing probably the

    00:06:38
    biggest Scuba diving school on the planet teaching Apex

    00:06:42
    advanced bands. I've been rezoned Kotel, you know, you're

    00:06:45
    doing maximum ratio of eight students to one instructor, day

    00:06:49
    after day, week after week, month after month, year after

    00:06:51
    year. So to say that I've got just as many technical services

    00:06:55
    recreational is giving you an idea of the broad range of

    00:06:59
    students that I've taught. That's, that's gone from entry

    00:07:02
    level, technical, which is a soft tech into the high tech,

    00:07:07
    which is the overhead and the rebreathers. So you've done done

    00:07:11
    a few

    00:07:12
    Matt Waters: of those. And that was a beautiful lead in there.

    00:07:15
    I'll drop you your fiver later. Can you let's let's talk through

    00:07:20
    the way people get into tech diver because I was actually

    00:07:22
    chatting with it with a message this morning about it. And I

    00:07:26
    asked her as a recreational diver non technical non non pro,

    00:07:32
    you know, what do you know about tech diving? And it's it's as

    00:07:36
    though there's a kind of mysterious shroud and you know,

    00:07:39
    those in the recreational that slap a tank on every weekend, I

    00:07:42
    don't really know that much about it without delving into

    00:07:46
    the weeds. So if you don't mind, can we delve into the weeds of

    00:07:49
    how people would start to get into tech? And why?

    00:07:55
    Jeffrey Glenn: It starts with a conversation with people that do

    00:07:58
    do tech. There is a dark cloud hanging over tech at the entry

    00:08:02
    level. People see that and they go, Oh, I can't do that. Because

    00:08:07
    I think it's a mindset thing they look at it are too

    00:08:09
    complicated, too challenging. We're in fact, the training

    00:08:14
    isn't as complicated and challenging. As it seems, yes,

    00:08:19
    it is more complex, you do have to focus more is a paradigm

    00:08:24
    shift where you have to turn into a thinking diver, a

    00:08:27
    proactive diver, as a record as a recreational diver you're

    00:08:31
    you're more reactive diver. people thrive on that because

    00:08:35
    they do put their focus more under pre empting situations and

    00:08:40
    being prepared for them as opposed to reacting to it. So I

    00:08:45
    think for me on Kotel, when I started my technical development

    00:08:48
    was seeing people on dive sites with a with a set of doubles on

    00:08:52
    their back or was sidemount. And like anything, people are

    00:08:56
    curious, they want to know about it. Then on the boat, during the

    00:09:02
    surface interval or after the dive, you'll see the

    00:09:06
    recreational divers on the boat looking at you, you know, they

    00:09:09
    want to ask questions. If they're confident they'll come

    00:09:12
    and ask you. What are you doing? How do I start that? And they're

    00:09:17
    usually the ones that go Yeah, I want to give it a go. So they

    00:09:20
    come in an hour introduce themselves, and they sign up for

    00:09:24
    the course. And that beautiful journey of technical diving

    00:09:27
    begins for them. So that's how I found from what I experienced at

    00:09:31
    most people start the technical. You would have seen like Andy

    00:09:36
    Campbell on the boat or big blue with his twin set on or his side

    00:09:40
    mount and you would have seen new dmts Looking at them going

    00:09:44
    Oh what are you up to? I think also the rise of social media

    00:09:49
    and seeing the photos of yourself and you know Pete

    00:09:53
    Maszlee doing these photos and Thompson George photos. Well,

    00:09:57
    this is epic images. Have divers in caves? Like I know Mick has

    00:10:03
    done some wonderful photos of me on the wrecks of Malta. People

    00:10:07
    see those images and they go oh, I want to be that guy. Because I

    00:10:11
    remember when I started I wanted to get that selfie Amina tune

    00:10:14
    set. So I thought the only way you're gonna get that cool

    00:10:19
    photo, Amina twinset is if I do the course. So now it's also a

    00:10:23
    little bit ego at play that you want to look cool on social

    00:10:26
    media and that. So, but going back to your original question,

    00:10:32
    I think it's more just exposure when people see it. It ignites

    00:10:36
    that curiosity. So people ask about it. And that's how they

    00:10:39
    start.

    00:10:40
    Matt Waters: Yeah, yeah. There's a there's actually just you

    00:10:44
    saying about the selfie or the photo? There's one that Miko

    00:10:46
    took and it just springs to mind instantly. When you talk about

    00:10:50
    it, and it's I think it's the only fact I've seen of you with

    00:10:52
    a big ear to ear smile underwater.

    00:10:55
    Jeffrey Glenn: Is that the one on the one? I'm on the

    00:10:57
    shortline? Yeah, yeah.

    00:10:59
    Matt Waters: Actually, if we go on YouTube, I'll put it here

    00:11:01
    somewhere. Okay.

    00:11:04
    Jeffrey Glenn: That one that was a wreck that we did on the HMS

    00:11:09
    Olympus in Malta. Malta Historical Society had literally

    00:11:15
    just opened up that rec to be digestible by civilians, and due

    00:11:21
    to Mikos infamy on the Thai cave rescue, he was given the

    00:11:27
    privilege of being one of the first teams to go down on the

    00:11:30
    Olympus. It was British submarine at 120 metres in

    00:11:35
    Malta, so they were just coming up from magnificent dive on on

    00:11:39
    that. It was funny mica was just playing around with his camera

    00:11:42
    and just coincidentally, I was just sitting above him watching

    00:11:45
    him swear at me and finish Yeah, it took that photo and that's

    00:11:50
    actually one of my favourite photos on myself. Yeah.

    00:11:53
    Matt Waters: Yeah, it's a fantastic shot. Nice Well, Miko

    00:11:58
    something that they'll finish he's just called he just got

    00:12:05
    back to the

    00:12:06
    Jeffrey Glenn: island that certainly certainly as we've

    00:12:07
    made, yeah, it costs him a small fortune to get there with all

    00:12:10
    the restrictions in place. But yeah, he's back on kotel

    00:12:13
    teaching teaching courses again. I was just

    00:12:16
    Matt Waters: hoping to hoping to put a visit in probably May time

    00:12:19
    next year

    00:12:20
    Jeffrey Glenn: Oh yeah. I'm looking at going back around the

    00:12:22
    same time might June June July only to start the business

    00:12:26
    interests again. There

    00:12:27
    Matt Waters: could be quite quite

    00:12:31
    Jeffrey Glenn: our borders are open very

    00:12:36
    Matt Waters: well, yeah, if you're gonna do June July, I'll

    00:12:38
    make sure I don't know that. Oliver's it

    00:12:42
    Jeffrey Glenn: might be hard to believe that even on a good boy

    00:12:44
    these days, night, choppers retired.

    00:12:50
    Matt Waters: We might introduce chopper later to Oh. Okay.

    00:12:56
    Anyway, back to training. So those people that, you know,

    00:13:01
    they've approached you, and they decide to come and have the chat

    00:13:04
    and get into the tech side of things. What's, what's the

    00:13:08
    overall benefits for those people that are going to start

    00:13:11
    taking that first step? Yeah, good

    00:13:12
    Jeffrey Glenn: question. Good question. The benefits of

    00:13:15
    technical diving. I think that's the knowledge first and

    00:13:20
    foremost, it's some knowledge that I pick up. Okay, in

    00:13:23
    recreational diving, you don't, you don't really drill deep into

    00:13:30
    what diving is about the psychological and physiological

    00:13:33
    effects of diving in, in the technical introductory courses,

    00:13:38
    you touch on that what is actually the gas doing to your

    00:13:43
    body? How's it affecting? How do we eliminate that gas so you

    00:13:46
    don't you delve deeper into into the knowledge base of actual

    00:13:50
    diving to actually know what the gases that you're breathing, or

    00:13:55
    doing as you're as you're coming up, so then when you apply that

    00:13:57
    knowledge, you have a greater understanding of why we do it.

    00:14:02
    Okay, and recreation of fine, this is what you do you do it.

    00:14:05
    But in technical, we go into deeper detail. So you have a

    00:14:08
    more intimate understanding of why we do the things that we

    00:14:12
    actually do. So in essence, you become a safer diver.

    00:14:17
    Matt Waters: Yes, and that's another point I wanted to raise

    00:14:20
    actually. I think a lot of people will look at it and think

    00:14:23
    that it's more dangerous. Getting into the technical

    00:14:26
    realm. They think

    00:14:27
    Jeffrey Glenn: that once they understand and have a deeper,

    00:14:30
    deeper into minute into into intermittent knowledge of, of

    00:14:34
    the diving, they become a safer diver. I feel much safer at 18

    00:14:39
    metres with a double set of doubles on my back was sidemount

    00:14:43
    than I would in a recreational setup. Yeah. Okay. And

    00:14:47
    unfortunately, you know, you're pushed to the recreational

    00:14:52
    you're you tick the box, you move on to the next course, or

    00:14:56
    in technical you need to show a mastery at that level. Right

    00:15:00
    before the instructor will allow you to go to that next level.

    00:15:06
    Okay, which is completely different to the way the

    00:15:08
    recreational realm is set up. So the understanding of what's

    00:15:13
    actually happening and occurring on that dive, the planning

    00:15:17
    involved with that. And then the execution of that dive, gives

    00:15:21
    you more confidence as a diver gives you a more intimate

    00:15:24
    knowledge as a diver. And the end result is you're a safer

    00:15:28
    diver. Like I know if I'm at 80 metres with a twin seven if

    00:15:31
    something goes wrong. So, okay, just turn my valve off, switch

    00:15:37
    to my short hose. Okay. And then in the dive, where as you see,

    00:15:43
    recreational diver, that catastrophic gas loss

    00:15:47
    Unknown: on that single tank, it's like, ah, and you shoot up

    00:15:51
    to the surface.

    00:15:53
    Jeffrey Glenn: Yeah, right. So if I have a twin cinema back,

    00:15:55
    and I know how to operate that due to mastery of the skill of

    00:16:00
    closing the valve down switch into my short house, signalling

    00:16:04
    to my buddy that I have an issue, then I can just safely

    00:16:07
    make up my way up to the surface knowing I've still got all my

    00:16:10
    gas on my back. So just going through that challenging aspect

    00:16:14
    of learning how to do that you will arrive at as a sales as a

    00:16:20
    cypher diver and that's introduced you at the

    00:16:22
    introductory courses. The very first course you'll go through

    00:16:26
    those processes.

    00:16:27
    Matt Waters: And you want to break down the introductory

    00:16:29
    course

    00:16:31
    Jeffrey Glenn: mostly of the agencies do an introductory

    00:16:33
    course that I teach with TDI with raid and with Paddy. It's

    00:16:39
    all caught so called different Lee the courses that you do, but

    00:16:43
    basically the introductory courses is introduction to how a

    00:16:48
    twinset works, the mechanisms of the twinset how the valve works.

    00:16:53
    Okay, so you have a father on one side, okay, you can just

    00:16:56
    close it, you can isolate it, okay. And then you have access

    00:17:00
    to both cylinders, okay, manipulation of the long hose in

    00:17:05
    the short house, gas sharing. But I think what, what I do then

    00:17:10
    most importantly, on the introductory courses is the

    00:17:13
    control in the water column. Okay, understanding buoyancy

    00:17:17
    control, understanding the six propulsion techniques to be able

    00:17:21
    to maintain your your control in the water column, which I think

    00:17:26
    is the most beneficial for introductory, or a technical

    00:17:30
    diver moving forward, having that control under the water.

    00:17:34
    Because you'll see, you'll see a lot of recreation divers

    00:17:37
    swimming like this, or you see a well trained technical diver

    00:17:41
    will will have control, you know, being trim and be able to

    00:17:47
    execute the dive in control will be able to ascend from the

    00:17:53
    diamond control, and be able to address any problems that they

    00:17:57
    have in the water, but still maintain control. And then

    00:18:01
    again, makes it safe. If you're having a gas sauce, or you're

    00:18:05
    having a problem on the water, and you do not have control,

    00:18:08
    you're either sinking greater than your depth or your pH on

    00:18:12
    your gas or you're ascending losing control on your ascent

    00:18:16
    because on the overinflating link, whereas if you have that

    00:18:19
    control and can and manage your buoyancy, while dealing with the

    00:18:24
    multitude of issues that you might have to deal with, so that

    00:18:26
    control again, you're safe. Yeah. And that's what it comes

    00:18:30
    down to safety.

    00:18:32
    Matt Waters: So I'm just picking up on something you said a few

    00:18:35
    minutes ago. Recreate recreational is ticking boxes,

    00:18:39
    as long as you can do the skills and you're competent, you're

    00:18:43
    meant to be it's meant to be mastery. Mastery is a it's I

    00:18:50
    think it's a looser, it's a very short, because it is my idea

    00:18:54
    Jeffrey Glenn: of mastery would be completely different to a

    00:18:56
    recreational divers mastery. Definition. That's

    00:18:59
    Matt Waters: the point. That's the that's leading me to the

    00:19:01
    next question is that if you have a customer that you're

    00:19:06
    teaching, and they tick the boxes, per se, but you're still

    00:19:12
    uncomfortable with that individual and signing them off,

    00:19:14
    can you not? Can you hold off of signing them off through your

    00:19:18
    own experience and thoughts on on how they are in the water?

    00:19:21
    Jeffrey Glenn: Yes in in technical diving. And I believe

    00:19:25
    it should be the same in recreational. But in technical

    00:19:28
    diving, we do you have the luxury of not certifying the

    00:19:34
    diver if they do not meet the requirements required. So I have

    00:19:40
    had divers who haven't met the performance requirements to my

    00:19:47
    satisfaction that even though I've had interns with me, I've

    00:19:52
    asked them the question, How did you think they went either went

    00:19:54
    well, and I'm like, I'm sorry, I would disagree with you there.

    00:19:59
    This diver We'll have to spend another another day with me in

    00:20:03
    the water. And that days will be continuous until they meet the

    00:20:08
    requirements. And I find most technical divers or most

    00:20:13
    students who are moving into the technical realm are quite

    00:20:16
    comfortable with that if they need more training. I'm usually

    00:20:21
    brutally honest with them. You haven't met requirements as yet.

    00:20:24
    I would like you to have another day, Jeff, and I promise this

    00:20:28
    because they want to be better. Yeah.

    00:20:30
    Matt Waters: And let's face it, I mean, the worst thing that

    00:20:32
    comes out of it as you get an extra day a diving

    00:20:36
    Jeffrey Glenn: and usually met, that's all they need. Hey, yeah.

    00:20:39
    Because what happens on those on that final day, that evaluation

    00:20:43
    day? This gets away on them. Yeah. And they overcomplicate

    00:20:48
    it, they overanalyze it, and they get anxious. And it's

    00:20:52
    usually up here. That fear up here that that usually leads to

    00:20:57
    them not having the day they wish for. So once they get

    00:21:01
    through that day, the next day is usually a little bit better

    00:21:03
    because they they've gotten through the previous day. It

    00:21:07
    hasn't worked for them. They know what's expected of them.

    00:21:11
    Okay, and they usually meet it with foreign colours right the

    00:21:13
    next day. Yeah. It's just that time in the water.

    00:21:18
    Matt Waters: It is it's an experience, isn't it? You're

    00:21:20
    getting relaxed with it.

    00:21:21
    Jeffrey Glenn: It is. It is and as you know, from the

    00:21:22
    recreational some of in kotel made that you're, you've got

    00:21:29
    time pressure on you. Right, people come in on the holiday

    00:21:34
    with a backpack on they got three and a half days into their

    00:21:36
    f1 watercourse, you know, deep down that maybe they haven't met

    00:21:40
    their requirements, that because he got pressure from the from

    00:21:44
    the dye shop from the shoot it, you tick that box and you move

    00:21:47
    them on?

    00:21:48
    Matt Waters: Yeah, yeah.

    00:21:51
    Jeffrey Glenn: Those students who then come on to the

    00:21:53
    technical training, you really got to let them know that it's,

    00:21:58
    it's not a time based it's performance based evaluation

    00:22:02
    criteria. And if they haven't met the requirements, they will

    00:22:05
    need to have another day with me another two days.

    00:22:09
    Matt Waters: And I think it's fair to say as well, and correct

    00:22:11
    me if I'm wrong, but I think from what I've seen over the

    00:22:13
    years, and you know, watching the likes of Richard Divini

    00:22:15
    teaching, it's a much more intimate teaching style at

    00:22:20
    smaller groups. And, you know, well away from the madding crowd

    00:22:23
    and more focused as, as you will expect. More Yeah, it is, it

    00:22:30
    appears more intimate, more, more controlled.

    00:22:34
    Jeffrey Glenn: It is it's as a as an instructor, you know, who

    00:22:38
    teaches courses, who teaches, you know, advanced tronics

    00:22:42
    rebreather courses, you are very intimate with your student,

    00:22:47
    you're at 100 metres, you're, you're on top of them, you're

    00:22:50
    pretty much writing them. You're there, you're watching

    00:22:53
    everything that they do. You're You're delving deep into their

    00:22:57
    soul. They're at 100 metres, something goes wrong, you're

    00:23:00
    like, as close to this monitor, as we are now to their eyes,

    00:23:04
    you're, you're seeing what they're thinking in their eyes.

    00:23:07
    So after you've both gone through that experience

    00:23:11
    together, you're you're quite intimate, and it's actually

    00:23:15
    forms really strong friendships. With insurance, you know, you're

    00:23:19
    not the why, why is it that when I'm teaching my students, I'm

    00:23:23
    not just teaching insurance, I'm teaching future dive buddies for

    00:23:26
    myself. Because I'm, I'm teaching them utilising every

    00:23:31
    resource that I've got with the hope that they'll come and join

    00:23:34
    me on my expeditions and my exploration projects later,

    00:23:38
    because the more on my mindset I can die with. Here I am. The

    00:23:43
    more people that I can get into technical diving, and show them

    00:23:47
    what I'm fortunate enough to see, you know, and what

    00:23:52
    technical diving has given me the opportunity to see the more

    00:23:55
    people that can see that the more love tech technical diving,

    00:23:59
    there'll be out there. Yeah, it's quite intimate. It is quite

    00:24:02
    intimate. It's one on one and it's a it's a complete paradigm

    00:24:05
    shift from recreation with technical. You know, it's such a

    00:24:09
    such a higher level of skill that's required to be a

    00:24:13
    competent diver.

    00:24:14
    Matt Waters: Yeah, you know, and that's, and that's not saying,

    00:24:17
    you know, people who are listening to this now, it's not

    00:24:19
    a it's not a scary level. I mean, you're taken from point A,

    00:24:24
    as a recreational diver to point B as a new technical diver, and

    00:24:30
    your your puppy walked all the way epsilon so that they've got

    00:24:34
    that that surely and that comfort.

    00:24:37
    Jeffrey Glenn: Yeah, absolutely. It's a step by step progress.

    00:24:39
    You know, it's like, the Japanese business will also the

    00:24:42
    Kaizen the Kaizen way to build by Robert Moore and something I

    00:24:46
    apply with a lot of my different aspects of life, just baby

    00:24:50
    steps, achievable steps. So, then you arrive at the big

    00:24:54
    picture with that foundation there. You know, so it is a step

    00:24:59
    by step progress. You know, if, if day two of the technical

    00:25:02
    diving course, is unsuccessful, then we do day two again. Yeah.

    00:25:07
    And the second day of day two is unsuccessful, then we do day two

    00:25:11
    again, before we go to day three, and so on. So by the time

    00:25:15
    they get to that safe 45 metre certification point, they're

    00:25:20
    competent. Right? And the only time I signed them off is like,

    00:25:27
    Am I comfortable? With this person? By themselves at 45

    00:25:31
    metres? Yes, I am done, you certified. And it is a step by

    00:25:35
    step progress. And it's a great journey. It's a rewarding

    00:25:38
    journey. Because there's gonna be times where you're like, What

    00:25:42
    am I doing? Usually by the end of it when you get to experience

    00:25:46
    that record 45 metres for 25 minutes and you've taken some

    00:25:50
    Instagram shots in our daughter and you've come up and you've

    00:25:53
    just done a dive which you've doubted yourself on and you've

    00:25:56
    come up just buzzing that confidence level of the dive,

    00:25:59
    which is gone sky high. That yeah, it is a step by step walk,

    00:26:03
    walk with baby step progress through to that point.

    00:26:09
    Matt Waters: And that so that first the introduction to tech,

    00:26:14
    that's going to be doubles whose doubles the, the start of

    00:26:18
    everything.

    00:26:20
    Jeffrey Glenn: My my look on is that I prefer to start with

    00:26:24
    doubles, because because that's how technical diving started.

    00:26:28
    Okay, all right. I know there's a lot of energy these days for

    00:26:32
    sidemount. So yes, you can do that introductory on sidemount.

    00:26:37
    But I prefer to do it on twin sets on doubles. Okay,

    00:26:43
    Matt Waters: so because what I'm what I'm angling at is, you

    00:26:46
    know, just thinking back to that discussion with the missus this

    00:26:49
    morning that that, that dark cover unless you delve into, you

    00:26:54
    know, a particular instructor when you're searching out to do

    00:26:57
    tech dive and you don't really know the route through the

    00:27:01
    ranking structure as it were the development structure. So you

    00:27:05
    know, I picked up on the the twin sets that you're talking

    00:27:08
    about on the doubles, but sidemount so it can be an it can

    00:27:11
    be an option that the student wants to follow? Or is it a

    00:27:15
    preference from the instructor side of the house,

    00:27:18
    Jeffrey Glenn: a assignment instructor will always push

    00:27:21
    aside now. Older school, chiselled salty sea dog might go

    00:27:29
    a set of doubles. But for me, a well rounded technical

    00:27:34
    instructor needs to be proficient in both sidemount or

    00:27:38
    Batman and switch seamlessly between the two. So if your

    00:27:45
    lovely lady came up and said, Jeff, I want to start my

    00:27:48
    technical diving route. I'd be comfortable saying which tool

    00:27:52
    would you prefer to use first, side mount or back mount. The

    00:27:57
    reason I like to do the back mount is anything really beyond

    00:28:02
    the 50 metre mark sidemount becomes a little bit more of a

    00:28:07
    challenge because of the singular tanks. Yeah, with all

    00:28:11
    your gas on the back, it allows a little bit more freedom at the

    00:28:14
    front is one gun to 5060 metres plus, I got five cylinders at

    00:28:19
    the front of me on site about so it becomes a little bit more

    00:28:22
    challenging. So when people come to me and ask they want to do

    00:28:26
    tech, I say what's your end goal? Is it caves? Is it 100

    00:28:29
    metres? Is it? Is it this or is it that and using that

    00:28:33
    information that they've answered that question on then

    00:28:36
    I'd say okay, this is what we're going to do. This is what I

    00:28:38
    recommend that we do. Okay?

    00:28:41
    Matt Waters: So the route through to the end goal can be

    00:28:44
    structured bespoke almost,

    00:28:49
    Jeffrey Glenn: pretty much, pretty much and how I used to

    00:28:52
    structure things on Kotel was they would come to me I'll do an

    00:28:55
    introduction. I will do technical days with my dmts just

    00:29:01
    take all the all the toys up to the swimming pool, and then it

    00:29:04
    gives them an opportunity to play with the sidemount play

    00:29:07
    with the doubles and play with my reboot this that I found that

    00:29:12
    I probably 70% of the students that wanted to start their

    00:29:16
    technical would like to do sitemap first. So if they come

    00:29:20
    into me to do the entry level of tech than the 45 metre tech and

    00:29:24
    then the extended range Tech, we will do the sidemount through

    00:29:29
    the 45 metres okay where I have my son about cylinders plus one

    00:29:33
    decompression cylinder and then I would veer over and do my

    00:29:38
    extended range training on on a set of doubles. Set of doubles

    00:29:43
    with with the 50% engine and yeah 100% And now they've just

    00:29:49
    done the entry level basic tech to 55 metres, which is the

    00:29:53
    extended range and now they're comfortable on both side mount

    00:29:57
    and back mount. Now they've got that practical experience to

    00:30:01
    draw from, they can then decide which route they want to

    00:30:04
    specialise in, or their future training. Yeah. So give them the

    00:30:10
    opportunity to do both. Yeah.

    00:30:13
    Matt Waters: So you got your, your students, you know, they've

    00:30:18
    got their 55 ticket was an extended range and

    00:30:21
    Jeffrey Glenn: yeah, I use the extended range. With TDI, it's

    00:30:25
    extended range with, with raid, it's the rage 60 programme. And

    00:30:31
    with Patti, it's the tech 50 programme.

    00:30:35
    Matt Waters: Now, a lot of people that in the recreational

    00:30:39
    side of the house, one of the one of the most common things I

    00:30:42
    hear when, you know, tech diving comes up. Is that the phrase of

    00:30:48
    why go so deep? What's the point? What is the point

    00:30:52
    Jeffrey Glenn: exploration? Curiosity? scientific reasons.

    00:31:00
    Matt Waters: Okay, I've been involved at a few of the

    00:31:01
    scientific things now. Yeah, a few of

    00:31:03
    Jeffrey Glenn: them. The plan was pre COVID was to get more

    00:31:09
    involved with major project Foundation, mathematic. Cardos

    00:31:15
    gonna be one of the divers with Matt. In fact, we just finished

    00:31:20
    Matt's cross over onto the JJ he did his course with me down at

    00:31:25
    kills we sinkhole and Gambia just recently with the objective

    00:31:30
    to utilise the JJ for some of the scientific projects that he

    00:31:34
    had in Trump lagoon bikini on the rec set. Yeah, so a lot of

    00:31:38
    the reasons people want to go deeper is it's for that very

    00:31:42
    purpose is some cool stuff down BP, it's you'll find that a lot

    00:31:50
    a lot of there's a lot of wrecks between the 60 to 40 metre range

    00:31:53
    that you just can't access as a recreational diver. Some of the

    00:31:59
    sinkholes around the world go a little bit deeper, so you can't

    00:32:03
    push the exploration and bypass those deeper sections. You need

    00:32:08
    to be trained in decompression procedures to be able to access

    00:32:13
    those passages to continue the exploration and also other

    00:32:16
    scientific projects on the marine life and the reef

    00:32:19
    ecosystem. That for example, Mark was doing in in Indonesia,

    00:32:27
    some of the scientific projects he was doing in the 80 to 100

    00:32:30
    metre range on the reefs into the back of the north there. So

    00:32:38
    there's a lot of projects and a lot of scientific research and a

    00:32:41
    lot of exploration out there on those deeper areas. So having

    00:32:46
    the skills necessary to access that part safely. is obviously

    00:32:53
    why people move into technical diving.

    00:32:57
    Matt Waters: So let's touch back on safety as well. I make no

    00:33:01
    bones about it. I think there's a lot of recreational divers out

    00:33:05
    there that become blase and overconfident when they dive in

    00:33:09
    particularly shore dives because it's just shallow and I see far

    00:33:14
    too many people that just go solo diving that haven't got any

    00:33:17
    backup supplies there's no buddies no not no assistance at

    00:33:21
    all. I think it's bloody ridiculous but I do want to

    00:33:27
    touch on raid and the tuition and rec recreational raid. I I

    00:33:36
    am impressed with the way that the recreational road system

    00:33:39
    works when it's taught properly. Again, it all comes down to the

    00:33:43
    instructors that are available to provide it but I also think

    00:33:46
    it gives a good lead into the technical aspect because it is

    00:33:50
    tech minded Are you allowed to agree disagree without without

    00:33:55
    pissing off Paddy and TDI?

    00:33:59
    Jeffrey Glenn: My my thoughts is this when I enter a course and

    00:34:02
    teach, there's great things that party do. There's great things

    00:34:06
    that TDI do there's great things that Ray do there's great things

    00:34:10
    that gee we do so I'm having an intimate knowledge of each of

    00:34:14
    the different agencies systems are utilised all those tools and

    00:34:18
    present them to my divers right. So at this point in time I'm not

    00:34:23
    single agency affiliated but I'll use all of them. I'm in it

    00:34:27
    for Patti right and TDI and they all have great systems that are

    00:34:31
    utilise

    00:34:33
    Matt Waters: till you can to make up pick the exactly suffer

    00:34:36
    exactly to

    00:34:36
    Jeffrey Glenn: make the effort and make my students the best

    00:34:39
    they can be at that level of certification. So I like the

    00:34:46
    RAID system because it borrows heavily from the technical

    00:34:50
    realm. Okay with foundational skills, holding holding the

    00:34:57
    position in the water column while dealing With a basic skill

    00:35:01
    of moss removal and replacement, they can do that while holding

    00:35:05
    neutral buoyancy. I'll get back to my days as a recreational

    00:35:11
    instructor going back 20 years. On dive three of the open water

    00:35:16
    course mat, we would swim around twins, it's time for them to

    00:35:20
    remove their mask, we would go and find a nice sandy spot would

    00:35:25
    all go and kneel down on the sand, hold each other's hand

    00:35:28
    keep the group tight, and one by one would go to them and get

    00:35:32
    them to remove the mask. Does that sound familiar? Met?

    00:35:35
    Matt Waters: Hang on. Okay.

    00:35:37
    Jeffrey Glenn: So my issue with doing it that way is that once

    00:35:40
    that diver is certified, they're going to jump on pinnacle for a

    00:35:44
    fungi, they're 18 metres, and their mask gets watery. They

    00:35:50
    need to take it off, what is their default setting then go

    00:35:55
    and find a sandy spot to kneel down to remove and replace the

    00:35:58
    mask. There's no sandy spot at shump on Pinnacle at 80 metres,

    00:36:03
    the nearest sandy spot is 30 Is that safe? So what Ray does is

    00:36:10
    spent more time in the confined mastering the ability to

    00:36:15
    maintain your integrity in midwater, while doing a very

    00:36:20
    basic skill of mass removal and replacement. They do that in

    00:36:24
    confined they're not doing to our confined sessions to

    00:36:27
    conflict. They're getting the student to master that. So that

    00:36:30
    means three hour four hour five hour confined session. If not

    00:36:34
    all day confined sessions. It makes Di Di wanted to dive three

    00:36:39
    and four. So much easier for the student and the instructor

    00:36:42
    because they've been developed with a technical mindset that

    00:36:47
    they can hold that position. Yeah, right. So when they do

    00:36:51
    submit eight Emmys at some point all masters got some modern on

    00:36:54
    edge removal and replacement. They have the confidence in

    00:36:58
    their ability to stay in that position and do that skill

    00:37:03
    without jeopardising the safety. And that's why I think RAID is a

    00:37:09
    is predominantly leaving the quality of training with with

    00:37:14
    some of the agents that OTT is doing it. Now, some of the guys

    00:37:18
    that Patti are following suit as well, because they're just

    00:37:21
    seeing that it can be done. It just means the instructor needs

    00:37:25
    to spend a little bit more quality time with the students

    00:37:30
    in the confined water training, that means minimising the

    00:37:34
    ratios. So instead of teaching eight to one like I did for so

    00:37:38
    many years, minimise that to four to one. So then you can

    00:37:42
    have that intimate relationship that we discussed previously

    00:37:45
    that a technical diver has had that with the recreational

    00:37:48
    diver, why not? Let's teach four to one concentrate more on those

    00:37:53
    fundamentals or those foundational skills and they're

    00:37:57
    going to be a better safer diver.

    00:38:00
    Matt Waters: Was that your phone?

    00:38:02
    Jeffrey Glenn: Yeah, I'll turn it off. Sorry, brother.

    00:38:04
    Matt Waters: That's a case of beer you

    00:38:09
    Jeffrey Glenn: so every time the bell rings, I need to give you a

    00:38:11
    case of beer.

    00:38:14
    Matt Waters: Shoppers bar is going to be

    00:38:20
    few days. So what's what's what's next, after the 55 You

    00:38:28
    know, if someone's got out the confidence about the skills,

    00:38:31
    what are they going to start looking towards

    00:38:36
    Jeffrey Glenn: you find a lot of divers may not want to go any

    00:38:38
    further. Okay, they've got the necessary skills, whether it be

    00:38:43
    side mount or set of doubles to stay in that 40 to 60 metre

    00:38:48
    range. I mean that that's a magnificent depth 40 to 60

    00:38:53
    metres you get to see so much more opens up more more doorways

    00:38:58
    to more adventure for you that you know if you do wish to go on

    00:39:04
    then then we usually have a quite detailed discussion

    00:39:09
    whether it wants to be open circuit or remain an open

    00:39:13
    circuit or we transition into rebreather right. So beyond the

    00:39:20
    the extended range, which is the you know, the 40 to 60 metre

    00:39:24
    depth, that discussion so there needs to be needs to be

    00:39:28
    prominent in the thought process because there's a big difference

    00:39:32
    right. Moving on to the open circuit. You have the skills in

    00:39:38
    place already to easy execute 100 metre, again, it's baby

    00:39:42
    steps 200 metres. There's a lot of training dives and execution

    00:39:48
    of training dogs before we hit that magical 100 metre mark.

    00:39:53
    That then if we decide to transition to rebreathers it's a

    00:39:58
    complete paradigm shift. You Whoever you are, you have to

    00:40:01
    accept that you're basically going back to square one. And

    00:40:05
    restart your training again. So if someone comes to me, they're

    00:40:11
    certified to the extended range of 40 to 60 metres, and they

    00:40:16
    want to progress. Then I'll sit down and say, right, these are

    00:40:19
    the these are the options, we can say on open circuit. Or we

    00:40:24
    can prep progress into rebreathers.

    00:40:27
    Matt Waters: Now, on the rebreather, front, let's start

    00:40:31
    talking rebreathers are pretty damn sexy. And, yeah, we're now

    00:40:36
    getting into the expensive realms. There's a lot of

    00:40:39
    advantages now. The to get onto a rebreather to learn how to use

    00:40:45
    a rebreather. Do they have to go through all of the precursors,

    00:40:50
    the intro to tech that doubles the size of out all that kind

    00:40:52
    of? Or is there a direct route? To rebreathers?

    00:40:58
    Jeffrey Glenn: Good question, Matt. Good question. This is an

    00:41:03
    ongoing debate amongst agencies amongst instructors from

    00:41:10
    different agencies. Yes, there is a direct route. Yes, you can

    00:41:15
    go straight onto what they call a recreational rebreather and

    00:41:18
    start your entry into tech using a rebreather. Or you can go the

    00:41:24
    open circuit route to extended range and then progress over.

    00:41:30
    Okay. Depending on the instructor, okay, some

    00:41:34
    instructors, it may be financially advantageous to them

    00:41:38
    to suggest the rebreather early on, because they may have a

    00:41:42
    student who wishes to buy the rebreather straight away. All

    00:41:45
    right, they may be an instructor who would rather just to

    00:41:48
    conflict, get them through, get them through the door. Okay. But

    00:41:54
    then you may have instructors who wish for the student that

    00:41:56
    have the fundamental skills in place. Understand what potency

    00:42:01
    is understanding what the gas is doing to see that student has a

    00:42:08
    it's developed that situational awareness and is comfortable at

    00:42:12
    those depths before over tasking them with the intricacies of the

    00:42:18
    rebreather at those depths. So coming from, from my experience,

    00:42:24
    when I'm having these discussions with my students,

    00:42:27
    and they wish to proceed under rebreathers, I always get them

    00:42:30
    to go to extended range level on open circuit. Because once

    00:42:37
    they're comfortable at 50 metres on a twin set, and then nailing

    00:42:42
    and executing every single dive and they're relaxed, and they're

    00:42:45
    coming up and they're just buzzing, then I say you're ready

    00:42:48
    to move on to rebreathers. If if there are 50 and they're all

    00:42:53
    over the place that buoyancy is not in point they're not.

    00:42:56
    They're not having good team communication, their awareness

    00:42:59
    is is minimal. That I'm gonna do there's no way that I will allow

    00:43:04
    you to go to 50 minutes on a river either. Yeah, because it's

    00:43:07
    just a whole nother level.

    00:43:10
    Matt Waters: Is that one of the dangers as to you know, if

    00:43:12
    someone's certified to 50 open circuit. When we go over to

    00:43:18
    rebreather, is it does the the debts qualification debts reset?

    00:43:24
    Or are they automatically allowed to use a rebreather down

    00:43:27
    of 50.

    00:43:30
    Jeffrey Glenn: So though, they will need to go through the

    00:43:32
    steps on the rebreather, so if they're, for example, a Arade

    00:43:38
    60. diver, then they would need to start as a rebreather 40

    00:43:44
    diver first and get the hours up before they can then move on to

    00:43:49
    the next programme. So it's not like a like for like

    00:43:53
    certification.

    00:43:54
    Matt Waters: Good, good. I'm just trying to draw out all of

    00:43:58
    the thoughts that go through my head and probably someone like

    00:44:02
    the message

    00:44:03
    Jeffrey Glenn: as well. So for me, for me going through the

    00:44:05
    processes of the open circuit journey. You've you mastered the

    00:44:11
    point C, and then understanding the trim the propulsion

    00:44:15
    techniques, and the awareness of what's going on around you.

    00:44:20
    Okay, so those skills are sort of squared away, and you've got

    00:44:24
    them in your pocket already. You then transition onto a

    00:44:27
    rebreather. The initial course the entry level rebreather

    00:44:31
    course is all about the unit. Understanding the intricacies

    00:44:38
    and and the intimate details of how the actual machine works.

    00:44:45
    Okay, knowing that you have the foundational skills already.

    00:44:48
    Okay, I'm not teaching you a rebreather and buoyancy

    00:44:52
    rebreather, and how to do a back kick or a helicopter turn.

    00:44:56
    Because you have that already. I'm just focusing on the

    00:44:59
    rebreather. then knowing that you have those skills already

    00:45:02
    those foundational skills in your pocket already, and when

    00:45:06
    you can just pull them out.

    00:45:08
    Matt Waters: Yeah. And this is where you've got particular

    00:45:11
    qualifications for a particular rebreather, because they've all

    00:45:14
    got their own systems.

    00:45:15
    Jeffrey Glenn: Exactly, exactly. So if you're, if you choose the

    00:45:20
    JJ CCF, then we just focus solely on the JJ CCR. And then

    00:45:25
    you might go through the entry level JJ course, then you go

    00:45:29
    into the mix gas course. And then you go into the advanced

    00:45:33
    mix gas course. And then if you wish to move over and transition

    00:45:37
    on to the X CCR, you have to do a crossover programme onto the

    00:45:42
    CCR. So it's like a five or six day crossover programme,

    00:45:47
    understanding the intricacies of that particular unit. Because

    00:45:52
    the electronic system may be different, the heads up display

    00:45:55
    may be different, the way that you bail out and do a deal you

    00:46:00
    won't flush may be different or will be different on each of the

    00:46:03
    different rebreathers. So just because you have a rebreather

    00:46:07
    certification on a particular unit doesn't mean that you can

    00:46:10
    dive every single unit

    00:46:13
    Matt Waters: suppose it's like passing the test on the mini and

    00:46:15
    jumping in a Lambo.

    00:46:16
    Jeffrey Glenn: Yeah, you need to understand how cars work exactly.

    00:46:20
    Matt Waters: And let's, let's back it up a little bit.

    00:46:23
    rebreathers people that are interested, curious, scared of

    00:46:31
    what's the word let's let's have a bit of an overview on the

    00:46:34
    advantages of a rebreather over an open

    00:46:36
    Jeffrey Glenn: circuit. Okay, time, time, time time. Okay, so

    00:46:42
    you have time on a unit you have the time on the unit. Usually,

    00:46:48
    if something goes wrong and open circuit, you don't have much

    00:46:50
    time, because you lose in your gas. Right? If something goes

    00:46:55
    wrong on the unit, which is very, very rare. All you do is

    00:46:59
    look at your handset. And if the gas that you're breathing is a

    00:47:03
    safe gas, then you have the time to go okay, I guess I'm

    00:47:08
    breathing a safe, What's my problem? Then you can analyse

    00:47:13
    the steps to isolate what your problem is. Okay, diagnose that,

    00:47:19
    and work out your solution. So allows you time what else you're

    00:47:22
    doing. So that for me is a big thing. It's a little bit more

    00:47:26
    relaxed. And then

    00:47:29
    Matt Waters: the no bubbles thing is a bit yeah, I know

    00:47:33
    sounds a little bit. But it's now it's true. If you're a true

    00:47:36
    if you're into the photography, then having zero bubbles coming

    00:47:40
    out, you're gonna get so much closer to the species you're

    00:47:43
    trying to live a

    00:47:44
    Jeffrey Glenn: will make some believe. I remember when I

    00:47:46
    started my journey on the rebreather, and I was getting up

    00:47:50
    my hours. And I was on Southwest and catalysis was pinnacle. And

    00:47:57
    I was just off the pinnacle at 30 metres just looking at my

    00:48:01
    handset just playing around and I just remember looking at once

    00:48:05
    and I had the yellowtail Barracuda like you know,

    00:48:10
    hundreds of them just like literally that far away from me.

    00:48:13
    And I got I was a little little shot with a little girl put my

    00:48:18
    hands but I was just so Oh, wow, they're so close to me. And the

    00:48:24
    fact that I was just so silent I was just became one of one in

    00:48:28
    their environment. So they're just gone. It was just thinking

    00:48:32
    black, they just come very close to me. And if I had him on

    00:48:35
    camera, then that would have been would have been also would

    00:48:37
    have got some great shots. But yeah, just leading into what you

    00:48:41
    said as a photographer. And you'll see some of the world's

    00:48:44
    leading photographers. They also happen to be rebreather divers

    00:48:48
    as well don't they? Yeah. So it's it's a it's a wonderful

    00:48:51
    tool for that avenue of underwater photography.

    00:48:57
    Definitely.

    00:48:58
    Matt Waters: And you can use rebreathers to maximum depths or

    00:49:03
    unlimited

    00:49:03
    Jeffrey Glenn: unlit unlimited unlimited on recovery. This

    00:49:08
    depends on your help or to your limited I mean my my brag a

    00:49:17
    little bit here, but I was part of the team for will Goodman

    00:49:22
    when he did 300 metres on out of the box. JJ CCR. He went to 300

    00:49:29
    overseas deep support diver. So yeah, the the depth of it on the

    00:49:32
    rebreathers are unlimited, but obviously, you know, we'll have

    00:49:36
    10 years rebreather experience under his belt before he

    00:49:39
    executed successfully that dive. But yeah, there is a there is

    00:49:43
    it's not a depth limit on rebreathers.

    00:49:45
    Matt Waters: I'm going to pick up on that the diver itself. At

    00:49:50
    what point at what depth did he end up being on his own?

    00:49:57
    Jeffrey Glenn: Why the why that dog went on the date mat was we,

    00:50:03
    we had planned it after a month of training together for that

    00:50:09
    day we went down by himself. And then when he hit his mark, he

    00:50:17
    started coming up and we timed it that I then went down with

    00:50:22
    Simon lydiate. So we'd meet him as he was ascending and then we

    00:50:27
    were coming down so he probably spent close to 15 minutes by

    00:50:35
    himself before I got ahold of you maybe 20 minutes I was

    00:50:39
    waiting within 20 minutes obviously set

    00:50:43
    Matt Waters: and I was having a quick look at some articles this

    00:50:47
    morning actually, and he was saying that I was computers and

    00:50:51
    whatnot just maxed out at like 250 or something

    00:50:54
    Jeffrey Glenn: yeah to add they went out but then they came back

    00:50:57
    in now to 90 So if you have a look some of the imagery from

    00:51:02
    his record will record that his is handset from his JJ maxed out

    00:51:09
    at 290 but once we uploaded the data the data into the shoe what

    00:51:14
    a software we're able to see the the actual lines it just stopped

    00:51:20
    recording on the interface, but the actual depths was recorded

    00:51:24
    on the actual software. Yeah, the the one the one that

    00:51:28
    actually worked was his $100 Scuba pro depth bottom of depth

    00:51:35
    timer so that was still working for him. It was able to make

    00:51:39
    sure that that's using using that tool.

    00:51:45
    Matt Waters: Brilliant. You are Shearwater diver yourself

    00:51:49
    Jeffrey Glenn: see anyone I rarely use my I am I started

    00:51:54
    using OSTC computers initially but first one failed second one

    00:52:02
    failed third one as soldered on. And at this time she was just

    00:52:06
    getting a little bit energy about the summer initial she

    00:52:09
    would have purchased as one of those big bulky petrels that

    00:52:14
    obviously they streamline them down to what you see today but

    00:52:19
    yeah, are you she What is she what a Perdix is my go to open

    00:52:25
    circuit computer and also on my JJ on my SCCR and on my SF two

    00:52:33
    rebreathers a Shearwater petrol twos it's it's pretty much the

    00:52:40
    only computer that I would recommend or you recommend them

    00:52:44
    I recommend them due to the fact that they've always worked for

    00:52:47
    me 20 years of technical diving they've never let me down so

    00:52:51
    that's why I recommend them there's other good computers out

    00:52:53
    there but for me it's it's only ever going to issue what

    00:52:57
    Matt Waters: I did I did the jump over in fact the logo on

    00:53:01
    the on the podcast cover is the Tarik oh look at you

    00:53:10
    Jeffrey Glenn: issuing a brace and seeking Vichy water model my

    00:53:13
    friend

    00:53:15
    Matt Waters: Yeah, this old guy needs a sponsorship

    00:53:21
    Jeffrey Glenn: what must you have on there?

    00:53:23
    Matt Waters: Oh that's that's an aqualen ego and me Jeff this is

    00:53:27
    obviously I made them made the mistake last weekend we went

    00:53:33
    camping I'll put I'll put the beach just an hour and a half

    00:53:37
    north of here and lovely weekend. But I took me took me

    00:53:41
    jet fins with me in the boats just that I took out onto the

    00:53:45
    onto the shoreline there because I've just got upgraded my camera

    00:53:49
    gear and the Ikelite and the eight inch dome port and I

    00:53:52
    thought I'll give it a go on some half and half shots. We'll

    00:53:55
    check the water conditions First I got him with the the jet fins

    00:53:58
    on Have you ever tried snorkelling with jet fins

    00:54:01
    doesn't work my mate I might as well just go and do 10 squats in

    00:54:05
    the gym with 100 kilos on your back

    00:54:07
    Jeffrey Glenn: on your feet underwater might were not very

    00:54:13
    effective on the surface.

    00:54:14
    Matt Waters: Oh no. Yeah, well, I'm leaving here today and I'm

    00:54:17
    heading down to a drain I'm just gonna pick up some I don't

    00:54:21
    actually move Auntie Quattros or something for the for the

    00:54:23
    snorkelling next time we go camping

    00:54:24
    Jeffrey Glenn: and I severity Quattros there. That's one of

    00:54:27
    the Morris fins that I would recommend for tech. Yeah. Good

    00:54:32
    night.

    00:54:33
    Matt Waters: I was just I was teaching them all the time

    00:54:35
    before I got these ones.

    00:54:36
    Jeffrey Glenn: So I had a bright yellow pair of any contracts.

    00:54:40
    Then I moved over to the RMS things but yeah, the Jets fans

    00:54:42
    made they they were like that was sort of life changing for me

    00:54:46
    once we got into the tech. It's so important to have an

    00:54:49
    effective thin because you propulsion is can either make or

    00:54:54
    break a knife. Yeah, definitely potion techniques and making

    00:54:59
    sure you have the right means to get the propulsion that you

    00:55:01
    need, whether it be a delicate back kick, or you know, a

    00:55:07
    powerful frog kick, you know, you need good fins. So yeah, it

    00:55:12
    doesn't happen at the surface.

    00:55:14
    Matt Waters: At the surface, you're just an elephant with

    00:55:22
    Jeffrey Glenn: she was speedos on.

    00:55:24
    Matt Waters: Oh, yeah. Let's get back into the tech side of

    00:55:29
    things. What's just picking up you're saying that you're gonna

    00:55:32
    be heading back out to Thailand, hopefully next year? What's the

    00:55:37
    what's the plans? You're going to you're going to get back out

    00:55:39
    to teaching?

    00:55:40
    Jeffrey Glenn: Ah, yeah, I'm sort of 5050 on that at the

    00:55:46
    moment. I think I think what I what I have to do is commit to

    00:55:52
    the projects that we had planned, pre COVID. One of those

    00:55:57
    projects with was with Miko with our NGO bottom line projects.

    00:56:03
    And because later off, we will be photogrammetry in the, the

    00:56:12
    USS was about the overhang on the garden. So if they'd have

    00:56:21
    that bit out there, we'll be doing some survey work for the

    00:56:25
    US Department of Defence for the USS legato. Last April was the

    00:56:30
    75th anniversary of it sinking. Where is that one legato? It's

    00:56:36
    in the Gulf of Thailand, just off Malaysia. So it's a

    00:56:41
    submarine USS like other submarine that was sunk in the

    00:56:45
    war during World War Two bond by the Japanese.

    00:56:51
    Matt Waters: Just watching you're tapping on the dash

    00:56:53
    there, Jeff is picking up on your mic. So you live in a Steve

    00:56:56
    vessel. He was doing the same last two

    00:56:57
    Jeffrey Glenn: days. But so. So a couple of the Kotel boys found

    00:57:03
    that funny enough they got in touch with the powers that be in

    00:57:10
    the US and they were like snow, a couple of the boys from Kotel

    00:57:14
    was found that wreck that we've been looking for for 50 is so

    00:57:18
    they went back out, dropped down, grabbed the belt, took the

    00:57:22
    photos, and sent it back to him gone, we found a boy with within

    00:57:27
    a day, they sent out a ship from one of their, one of the naval

    00:57:32
    bases in Singapore, and met them on site. They sent their divers

    00:57:36
    down to confirm the fight. And okay, we found it. This is the

    00:57:40
    one so it actually gave a lot of closure to the families of the

    00:57:45
    sailors that are on that wreck. So last April was the 75th

    00:57:49
    anniversary of the sinking of that. So we had given given the

    00:57:53
    rights and the authority to do some photogrammetry on the wreck

    00:58:00
    and also put a plaque in memory of the gentleman that found it

    00:58:04
    and also put up the American flag back on to the bow. So I

    00:58:09
    think because of COVID that obviously was put on pause so

    00:58:14
    there was been remnants or Miko, Eric, Eric Brown and myself that

    00:58:18
    we're going to be the divers on that project with a with some

    00:58:22
    support from like Prince, he has them and Timmy Lawrence and that

    00:58:26
    sort of thing. So I think we're gonna go and do that. Also got a

    00:58:29
    couple of projects to do in Croatia and Italy, with Patrick

    00:58:33
    Whitman, and some of the boys that are based over there. And

    00:58:39
    maybe even head back to Mexico as well for a little bit a

    00:58:42
    little bit on the case. Right before I think about settling

    00:58:47
    somewhere in teaching for a while, even though it'd be

    00:58:50
    teaching in those those areas. I think I just need to get my

    00:58:54
    diver mojo back on the NAS. Got some

    00:58:58
    Matt Waters: fantastic shots in in the sonotubes until I'm done.

    00:59:03
    Jeffrey Glenn: Yeah, unfortunately, those are some

    00:59:05
    really cool people over there. Gotta got a lot of might say

    00:59:09
    that, that are currently diving every day putting up photos on

    00:59:13
    social media. Joe makes him extremely jealous and envious,

    00:59:17
    that we're in Alcatraz and can't go anywhere. That yeah, I'll be

    00:59:21
    heading back there's a lot of good people over there in Mexico

    00:59:23
    a lot of good people there in Europe that that attacked I was

    00:59:26
    in the beauty of the technical community that it's it's very

    00:59:29
    welcoming and very small that you get to know a lot of people

    00:59:32
    very quickly. And it's it's a wonderful opportunity and

    00:59:37
    lifestyle. And being a technical divers, you know, opened up so

    00:59:42
    many different doorways throughout the world of

    00:59:44
    different places that you can dive where you get to meet all

    00:59:46
    these really cool interesting people as well. So yeah, I think

    00:59:50
    Matt Waters: we stayed. We did was just before the year before

    00:59:54
    COVID message did five weeks through Galapagus and backup

    01:00:00
    Claire and yeah,

    01:00:01
    Jeffrey Glenn: they're ex military as well met. So yeah,

    01:00:04
    connection there is. I remember you. You sent me a Facebook

    01:00:09
    message. You sent me a little video of yourself. I just wrote

    01:00:13
    rubbing it in while I was on the beach. Now I remember that Yeah,

    01:00:20
    yeah, it's amazing place over there. Amazing. Yeah.

    01:00:23
    Matt Waters: I mean, we were only there for what, three or

    01:00:25
    four days. But it was certainly interesting. For me being, you

    01:00:30
    know, photo geek, I was more interested in the entry and exit

    01:00:34
    points, because there was lights. Yeah, for sure. Yeah.

    01:00:37
    But the pit was just simply fantastic.

    01:00:40
    Jeffrey Glenn: How good are those photos of people in those

    01:00:42
    light race? Just looking back here?

    01:00:46
    Matt Waters: Well, those those ones that was talking about the

    01:00:48
    ones that you're in, you've got the salad tights and the style

    01:00:52
    of mites. And, you know, you've clearly the team have put their

    01:00:57
    strobes in place so that they flash off at the right time. But

    01:01:01
    they're just, they're awesome.

    01:01:02
    Jeffrey Glenn: Yeah, that's right. The divers, the divers

    01:01:06
    said, I'm with you know, SJ Bennett. Thompson George.

    01:01:12
    Matt Waters: I'm not in I don't know that.

    01:01:14
    Jeffrey Glenn: Yeah, they're on social media, they have

    01:01:17
    fantastic photos, you know, a lot of them use video lights,

    01:01:21
    actually, they don't use the stripes, because they know the

    01:01:25
    passages they're swimming through from previous previous

    01:01:29
    dives. So they're quite intimate with those those areas. So then

    01:01:33
    they pause the model, they set up the video lights where they

    01:01:37
    need to, and then they get the model to swim through that

    01:01:41
    section. Yeah, so they're very, very intimate with those areas.

    01:01:45
    So it's, you know, very safe and know exactly, you know, the

    01:01:49
    compass bearing of the cave, the where the lines running. So the

    01:01:53
    very safe there. So

    01:01:55
    Matt Waters: speaking of safety and cave tours, we're touching

    01:01:58
    on caves. And harping back to talking about the intimacy of

    01:02:03
    training. I think Lani and Claire have their setup is good

    01:02:10
    as a good example of what I'm trying to explain there because

    01:02:13
    it's away from the madding crowd, it's, it's, it's focused,

    01:02:17
    because you're in your own compound. And, you know, all

    01:02:19
    that training can occur without distraction. And I think that's

    01:02:24
    what you need for for that kind of adventure. You know, once

    01:02:29
    you're going into an overhead environment, it's got to be

    01:02:32
    completely focused, doesn't it?

    01:02:33
    Jeffrey Glenn: Right? It is focused training, because you

    01:02:37
    need that focused execution to be seamless. So it is very, you

    01:02:43
    know, maximum groups three, because that's the ideal team

    01:02:47
    size in a cave. So no more than three instructors always

    01:02:53
    hovering metres away from the diver. In well travelled caves.

    01:03:01
    So the cave instructor has their set caves that they go to, for

    01:03:07
    each of the different training guys, because they know that

    01:03:10
    that training cave intimately. So then they can drill down on

    01:03:15
    the focus of the diver skills in that particular section of the

    01:03:18
    training. Because obviously, as an instructor, you don't want to

    01:03:22
    be worried about oh, which was out, which was that which was

    01:03:25
    this, your focus is on the on the students. And so if you do

    01:03:32
    have a moment, you can easily look up the environment. Okay, I

    01:03:35
    know exactly where I am. This is what I need to do. It's a

    01:03:38
    decisive action. But yeah, it's very, it's very focused. And

    01:03:42
    that's, that's something that you have to you have to accept

    01:03:46
    when you're moving to technical is that you're your instructor

    01:03:49
    is going to get close to you. That's why I say that is because

    01:03:55
    I've had several students say to me on debriefs because a lot of

    01:04:01
    the times I asked them to brief the diet debrief the dive, just

    01:04:05
    to see where they're at, and what their thought processes

    01:04:08
    were. And a lot of them say, you know, you got very close to me,

    01:04:11
    Jeff, I'm not comfortable with that. And like, you need to get

    01:04:16
    comfortable with being uncomfortable make on there to

    01:04:19
    be your safety net if something goes wrong. And once they get

    01:04:23
    that through their head, they're okay with it. And then you you

    01:04:27
    transition into their cave environment where there are

    01:04:30
    like, procedures where we practice going through

    01:04:33
    restrictions, where you are very intimate with your teammate, you

    01:04:38
    know, and once they they bring down that war, they're like,

    01:04:41
    Okay, cool. Yeah, because it is, it is a feeling of comfort. I

    01:04:46
    mean, you like when you're a child. When you're feeling

    01:04:49
    uncomfortable, your parent picks you up, right and hold you when

    01:04:54
    you're in a cave and you think the world's gonna when you feel

    01:04:57
    the touch of your teammate or the instruct To it

    01:05:00
    automatically. Someone's here. I'm okay. So it's just a matter

    01:05:06
    of getting comfortable with the intimacy of the training. And

    01:05:10
    you'll see with Claire and Lenny's, you know, they've been

    01:05:12
    wonderful compound there, where they, you know, focus on the

    01:05:16
    technical training of caves and an open open sea diving. So

    01:05:21
    yeah, it's, it's pretty cool. It's pretty cool. It's pretty

    01:05:24
    cool. It's pretty cool to see the students enter the course,

    01:05:29
    you know, fearful, anxious, questioning themselves. And then

    01:05:35
    eight days later, they're a full cave diver. And they're just

    01:05:38
    like, Wow, unbelievable confidence. It is an

    01:05:43
    achievement. Because it really challenges challenges yourself.

    01:05:47
    challenges, challenges, all the negative thoughts that you have.

    01:05:51
    I can't do this where you just did it. Yeah, I can do this now.

    01:05:55
    You know, so I think

    01:05:56
    Matt Waters: it's Yeah, I think it's a particular kind of person

    01:05:59
    that wants to do cave in though, isn't it? I know. Those little

    01:06:02
    those few dives and played around with, you know, caves a

    01:06:05
    little bit. You know, you shouldn't play around, but not

    01:06:08
    to any great depth. But for me, I prefer the open space, the

    01:06:14
    fish, the Rex. I don't get the excitement as much with caves.

    01:06:20
    And that's just me being honest. I'm sure there's people out

    01:06:23
    there that will be screaming by now guys.

    01:06:27
    Jeffrey Glenn: Are Awesome. My reply to that, Matt, you haven't

    01:06:30
    been to the right cave yet. I have to be honest. And every

    01:06:36
    every time I go into a cave, I'm fearful. You know, I'm like,

    01:06:39
    anxious, you know, got the 100 voices in my head go. As soon as

    01:06:46
    you get in there, and you look around and you think, Wow, look

    01:06:49
    how big these caves are? Yeah, you're like, wow, look at that.

    01:06:55
    Look at that. Look at that. And before you know it within

    01:06:57
    minutes. You're not even fearful anymore. You just like cool.

    01:07:01
    Look at this stuff I'm looking at. Because you're diving into

    01:07:04
    history, Matt, you're diving into history lab I have been

    01:07:07
    fortunate enough to do some exploration dives in, in Mexico,

    01:07:12
    to unexplored passages where I'm looking at things that I know,

    01:07:17
    no one on this planet had seen before. Things hundreds of years

    01:07:21
    old and it gives you a buzz, it gives you a path go. Wow, wow.

    01:07:25
    And that draws you to draws you do a little bit more, you know,

    01:07:28
    let's go here. What's around that corner? What's in that

    01:07:30
    keyhole? So yeah, I mean, the challenge of technical diving is

    01:07:35
    there. It's it's a challenging route. But once you're there,

    01:07:40
    the rewards are endless, and I can't wait to get back to it.

    01:07:44
    I'm excited to go COVID glory now I'm not just gonna look at

    01:07:47
    my cape diving pictures now.

    01:07:52
    Matt Waters: I'm just gonna think about some warmer water.

    01:07:57
    Jeffrey Glenn: I did a couple of months of training in a Gambia

    01:08:01
    just recently. I was teaching Ryan, his raid rebreather 60

    01:08:11
    Instructor Course. And I was teaching Matt and a couple of

    01:08:14
    guys from Altona dollar shop in Altona. The entry level

    01:08:20
    rebreather course and I was diving in Cosby's 780 degrees

    01:08:24
    met so when you're used to 30 degree water in Thailand to move

    01:08:31
    into 17 degrees and the boys down there will like it a warm

    01:08:35
    day Jeff. I did buy some extra undergarments. I didn't. Well,

    01:08:44
    Matt Waters: I'm not great with it. When we get one we're

    01:08:48
    usually between 16 and if we're lucky 20 to 23 in the height of

    01:08:52
    summer, but you know I do go and dive and I enjoy dive in here.

    01:08:58
    However 1617 degrees it's it's certainly the one that makes me

    01:09:04
    decide to have an extra cup of coffee instead.

    01:09:07
    Jeffrey Glenn: You are music drysuit

    01:09:09
    Matt Waters: I did do and then I started hitting the gym so the

    01:09:11
    dry super bore I outgrew and then I'm a bit reluctant to

    01:09:17
    spend another couple of three grand on it. Assuming it's been

    01:09:19
    around growing, isn't it?

    01:09:21
    Jeffrey Glenn: It's expensive until that um, again like you

    01:09:24
    want to dive you know some of those places in Europe. You know

    01:09:26
    you want to long submersion in Mexico, Florida. In those caves,

    01:09:31
    yeah, you need to keep warm otherwise. I'd say that's it all

    01:09:35
    over for you. And I'll shoot in a mindmap Steve Lambert I taught

    01:09:42
    him his entry level. His entry level technical diving on Kotel

    01:09:47
    and I was banned. The he moved on to rebreathers we went back

    01:09:51
    to the States went back to Florida. They moved on to the

    01:09:55
    rebreathers the Optima just founded Optima regretted Uh, and

    01:10:01
    he's been throwing himself into the cape community there in

    01:10:04
    Florida. And last weekend, he just did an eight and a half

    01:10:08
    hour cave dive, some exploration dropped another like 500 metres

    01:10:12
    a line and a cape passage that he and his mates had found. And,

    01:10:16
    you know, for me as its initial instructor, I get a real buzz

    01:10:20
    out of seeing my previous students just kicking ass and

    01:10:25
    doing cool stuff in technical diving. You know, I've watched

    01:10:30
    the progress of quite a few more students, and sometimes I think

    01:10:34
    they've surpassed what I

    01:10:37
    Matt Waters: got to get back. I gotta get back out there and

    01:10:39
    Jeffrey Glenn: do some more. It's fascinating. It's really

    01:10:43
    cool. Because that's, that's what you're seeing with

    01:10:45
    technical you know, it's just, there's such a long journey with

    01:10:49
    it. And going back to recreation, you can only go so

    01:10:51
    far to recreation. Yeah. And follow people with a real true

    01:10:55
    passion or diving do eventually migrate into tech. And once they

    01:11:01
    realise the learning curves, there is exponential. It's it's

    01:11:05
    it's a whole lifetime of adventure right there in front

    01:11:08
    of you.

    01:11:09
    Matt Waters: Yeah. Well, this has been a bit of an adventure

    01:11:12
    in itself might. I think we'll I think we'll wrap it up for now.

    01:11:16
    Okay. It's, it's been an absolute pleasure having on the

    01:11:20
    show, buddy and seeing you it's been far too long. So I'm scared

    01:11:25
    to say it, but we'll probably have a beer again at some point.

    01:11:31
    Jeffrey Glenn: Next year, they're having us tech up and

    01:11:33
    they want you in Sydney. They're doing it in Melbourne next year.

    01:11:37
    Oh, yeah. It was supposed to be this year, but obviously COVID

    01:11:41
    put a halt to those plans. But I think they're doing in

    01:11:44
    September, next year in Melbourne. So I'll be going look

    01:11:48
    into that. Make sure you get down there because I'll

    01:11:50
    definitely be there for sure. But yeah, we may see each other

    01:11:53
    in Cape Town right.

    01:11:58
    Matt Waters: Fingers crossed. But

    01:12:03
    Jeffrey Glenn: Rugby World Cups next to me. Is it is it next

    01:12:06
    year or the year after? As 2023. So no, no as far as we can go.

    01:12:13
    What's your rugby together?

    01:12:14
    Matt Waters: Yeah, a little bit of carnage.

    01:12:18
    Jeffrey Glenn: Thanks for having me, Matt. I really appreciate

    01:12:20
    it. Enjoy the time with you, Mike. Good to see you again.

    01:12:23
    Matt Waters: You too, buddy. It's been great. Thanks for

    01:12:25
    coming on the show.

    01:12:25
    Unknown: You're welcome. Thank you. Cheers, guys. Thanks

    01:12:27
    everybody, me. podcast for the inquisitive

    01:12:32
    diver.

    Jeffrey Glenn,TDI/SDI,PADI,RAID,technical training,BansTec,Go Pro Asia,

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