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I've got a dilemma. In a few days time,
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I'm heading out to Greece to dive the
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And I'm struggling to decide which
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That might not sound like a big deal,
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but on this trip it is.
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Because if I get this wrong, I'm going
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to be cold. And I really feel the cold
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Once you get cold on a dive like this,
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you don't recover from it.
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I finally made a choice, which I'm going
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to tell you at the end. But first of
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all, I wanted to talk you through my
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And I've been thinking about this for a
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Got two options. I've got my R I 2 100
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and I've got my 9090.
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Both of these are absolutely awesome
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suits and both of them that I trust
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So it isn't about one being good and one
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being bad. It's about which one is right
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for this specific trip. Let's start with
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weight because this trip isn't just
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about diving. It's everything around it.
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So flights, transfers, boats, moving kit
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round airports, logging it onto cars and
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taxis and all that kind of stuff.
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And when you're traveling with a
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rebreather setup, it's not just a bag of
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BCD, a mask. I've got the rebreather,
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stage regs, cameras, lights, tools,
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spares. All that lot adds up very
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the 9090 wins that one. It's lighter,
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lower bulk, easier to pack.
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So I actually weighed them both.
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Now, the 9090 does come in about 5.8
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kilos and this one, the R I 2 100, about
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7.4. So there's kind of 2 kilos in it.
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But it's not massive.
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It's not the difference between
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traveling and not traveling. It It's
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just something that you need to account
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Although weight is a factor,
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it's perhaps maybe not as big a factor,
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especially as I first thought.
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Once you're in the water, obviously
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weight doesn't matter anymore because
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then it becomes all about temperature.
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That's the big issue. And you think,
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"Okay, Greece. That's going to be warm,
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Well, that's what you might think. It's
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going to be Greece, blue water, easy
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But at depth and on long dives, it
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I'm there in April, which is pretty much
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the coldest time of the year.
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The water temperature is expected to be
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about 17° on the surface on stops and
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maybe 13 on the bottom.
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So yes, I mean that's a warmer than the
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UK, but in reality, not by an awful lot.
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And you know, when you're talking about
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kind of multi-hour dives,
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that difference isn't really as
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important as perhaps you might think.
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And I do get cold. That's That's just
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Some people don't and I'd love to be one
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of those, but I'm not. So this is a
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really big part of this decision.
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Because this dive for these dives are
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going to be 3 hours and and potentially
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much longer if something goes wrong.
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And as I mentioned, once you get
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cold on a dive like that, it's not just
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about comfort. It changes everything.
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Dexterity, decision-making,
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and you know, how much you're enjoying
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it. Now, the R I 2 100 has built-in
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insulation. It's compressed neoprene. So
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the suit itself is actually doing a lot
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You've got that inherent thermal
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protection around you. Whereas the 9090,
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it's just a shell. It gives you no
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Everything comes from what you're
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wearing underneath it.
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There's the other things you need to
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think about. What happens if something
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it probably will. Maybe not on this
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trip, but does happen. That's where some
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of the differences become real.
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With a trilam, you know, if you get a
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you're not just getting wet.
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You're getting cold. And you know, that
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happens pretty quickly.
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There's As I've said, there's no
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insulation in the suit itself.
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You get water in, heat gone.
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Whereas with the R I 2 100, you've got
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that built-in neoprene insulation. So
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even if you do get a leak,
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you're likely to stay warm for longer.
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Buys you time. Effectively acts as a
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wetsuit. And on deeper, longer dives,
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then clearly that time is important.
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There's another kind of slightly unusual
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factor. The 9090 is front entry. And
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that's one of those features that gives
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you some kind of interesting options
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that you don't really think about until
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I remember an incident with Rick Ayrton
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on the Britannic. He ended up with a
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kink in his P-valve hose. That's one of
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those things that goes from slightly
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annoying to properly urgent really,
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With a back zip suit, you're absolutely
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stuck. There's nothing you can do about
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it. With a front entry 9090, he was able
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to to get in open up his zip, get in,
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undo the kink, and carry on.
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It flooded the suit, but that was still
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a far better outcome than the
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That's a genuine advantage of a trilam
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or a front entry suit.
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But for me, it's not the deciding
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And that's where the undersuit setup
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comes in as well. Because it's not just
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about the suit, it's about the system.
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And regardless of which suit I I take,
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I'm going to be running the 03 PBB
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That's their colder water option. It's a
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double-layer thermal fleece. So it's
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properly warm without being overly bulky
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and super restrictive.
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It's a two-part system as well. So it's
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flexible and easy to move in once you're
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fully kitted up and you can do stuff
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It wicks moisture away from your body
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because once you get damp inside a
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drysuit, your insulation kind of drops
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off. So that wicking is really
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important. And managing moisture in some
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ways is is almost as important as the
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On top of that, I'm also taking a heated
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vest. I'm using the Heat Venture Dry
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version 3, which is a big step up from
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It's relatively light, but it puts out a
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load of heat. And from a travel point of
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view, the the batteries are going to be
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relatively small and easy to carry,
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which definitely helps with the weight
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and that kind of stuff.
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as I said, it's a significant upgrade
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over my old thermalution system.
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And the heated vest means that if I
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start to get cold, I can actually do
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something about it rather than just
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suffering through it. And that does
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change the equation slightly. But for
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it doesn't replace insulation. It just
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kind of adds to it because it might not
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be there all the time.
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There's also another side to this that
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you got to think about.
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Everything I've talked about is about
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staying warm underwater. I also need to
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think about the surface.
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And this is something people don't often
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think about, maybe they underestimate.
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Overheating becomes a real issue.
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You kind of you're kitted up on the boat
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waiting to get in. You're sat in the
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And if you're in a warmer neoprene suit
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with a thick undersuit,
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you can really, really cook. And that's
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definitely a downside of the R I 2 100.
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It's warmer, but that warmth works both
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ways. So you got it on the surface and
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underwater. You need to kind of think
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about how you manage that.
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that's something I can deal with,
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especially in Greece in April.
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Being warm before a dive in is
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uncomfortable, but being cold during a
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long, big dive for me is a much bigger
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problem. So I've been going back and
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forth on this. I've been debating it for
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months. Weight versus warmth.
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Convenience versus protection.
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Surface comfort versus in-water
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Because if I zoom out and look at what
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really matters on this trip,
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it's for me, it's time in the water.
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It's going to be They're going to be
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relatively cold water, and
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not so many options if things don't go
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And there's one more thing I need to
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think about. Now, I've used the 9090
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before and I know it works.
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I've used it on deep dives
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in the Mediterranean, but those were a
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bit shorter, 90 to 120 minutes, not 3
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hours. It was in Malta. And for me,
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that's a slightly different proposition.
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So after all, I've made my decision. I'm
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taking the R I 2 100.
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I'd rather carry an extra couple of
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than spend 3 hours on multiple dives
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It just gives me more inherent warmth.
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There's There's also that margin if
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something goes wrong and
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it means I'm less reliant on everything
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else working perfectly.
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And on a dive like this, on a trip like
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this, for me that matters.
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I do know exactly what I'm giving up
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This is going to be heavier.
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It's going to be warmer on the surface
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it's going to be slightly less flexible
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as well. So, there's still a part of me
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wondering if I'll regret it, but right
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now this feels like the right call.
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Hopefully, I'm not going to be sat there
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on the boat in Greece thinking, "I wish
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I'd brought the other one."
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Now, if you got some thoughts on what
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you'd take, now please let me know in
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the comments. If you want to see how
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this decision-making
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actually plays out on the Britannic,
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well, I'm going to be doing a whole load
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more content, so make sure you watch it.
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It'll be on here. It'll be on my social
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media channels. I'll be putting out a
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a load more information, everything, and
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you'll be able to find out if I made the
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right choice or not.
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I'm Dom Robinson, deep wreck diver. Hope
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you enjoyed this video. I look forward
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to seeing you on the next one.