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    Drysuit noob questions

    SI-TECH Antares are a pain. Because they are oval, the glove side and the suit side rings MUST be perfectly aligned otherwise they will leak. Lining them up is a pain. If the suit already has Antares suit rings in place then I suggest you look at the Waterproof Ultima system. The suit side rings...
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    Resort's " New Normal " Rule - No AIR 2 or diving your long hose

    The OP: "During supervised diving activities (boat dives, guided shore dives and courses) guests must be in the possession of an alternate air source. This cannot be the alternate air source and inflator hose combo or “air2’’. Technical diving is to use neckless as primary source of breathing...
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    Resort's " New Normal " Rule - No AIR 2 or diving your long hose

    No, I would not use this resort. Insisting on people using techniques or equipment configurations that they have not practised with, and are not as effective, to control the small risk of Coronavirus infection in an OOA emergency when the immediate is drowning and death is, frankly, farm animal...
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    SEALs don’t like split fins either.

    I suspect zip ties are simply a solution to the Navy having thousands of split fins in stores and refusing to order better fins until the stock of splits is used up.
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    Mk 20 piston

    That notch on the piston is entirely normal, all mk20 and mk25 (and Halcyon HP75 for that matter) pistons have it. I don't know why.
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    Should port o-rings be changed during overhaul?

    With few dishonorable exceptions, most genuine manufacturers' service kits come with new o rings for all ports. In the few cases where they are not included I would still expect a reputable service technician to replace them anyway from the stock of o rings they should have to hand. Not...
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    Teric not Accepted as Primary Dive Computer?

    A "technical" diving course that specifies the exact computer you must use? Run, don't walk, run away from this course and find a sensible provider.
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    Thinking about diving as a career and want advice!

    As an instructor you'll make next to nothing, as a DM you'll make nothing. That's just the way it is, remember DM and instructor courses are just another course with a margin for the certifying agency and you'll be sold the courses in a very similar way. The result is a market saturated with...
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    all these acronyms

    Great Old Chestnuts of the World #29 SCUBA= Some Come Up Barely Alive I nearly choked on the dust that came off that one. Here's another couple for us Brits. BSAC = British Soaked in Alcohol Club or Bring Some Additional Cash Alternatively, at elections it's B*llsh*t, Secrets And...
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    why bsac v padi?

    Hi Dorsetboy, I'm really sorry to hear of your poor experience with local BSAC clubs. This really shouldn't happen, BSAC have spent a lot of time trying to re-educate branches into emphasising that 'diver' is the key description, not the acronym at the front! Anyway, I don't know where you...
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    Medal of Honor

    'Few Survived' by Edwyn Gray is interesting. I gave my copy away to an elderly neighbour whose uncle was killed in the K13.
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    Holding your breath at depth ???

    So, it's the Rate of O2 consumption that varies rather than the Amount? Is my interpretation of that position correct? Uncle Pug: I have no problem with sarcasm, it's just that when dealing with strangers or responding in a sensible discussion I don't use it because I don't know how they'll...
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    Holding your breath at depth ???

    I didn't make any comment about CO2 being the respiratory trigger. I thought everyone else had posted to make that point clear and I didn't think my repeating would contribute anything. I did, however, comment on oxygen consumption, which appears to be a constant based on metabolism. This...
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    Holding your breath at depth ???

    AFAIK there is no solenoid on an draeger SCR. The orifice provides a constant flow of nitrox. Thus an SCR is limited to the MOD of the nitrox used. There is a solenoid on some (or all?) CCR's as they have separate 02 and diluent cylinders and have top up the 02 to maintain the pp02 set point...
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    Holding your breath at depth ???

    I'm not sure but I understand that CO2 production is dependent on metabolic rate rather than exercise etc. i.e. your body consumes O2 and generates CO2 at a set rate that varies between individuals. This why SCR rebreathers such the draeger dolphin have a choice of orifice size for the flow of...
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    Frog kick or flutter?

    Didn't know until recently that the kick I've used for the past 10-15 years actually had a name i.e. frog kick! Tried it after I saw someone else doing it and found it much less tiring and more efficient as well as comfortable. Also noted it didn't kick up the stoor as much. And with a bit of...
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    Forget DIR!

    PS I reckon this board is great because it's the only place in diving I get referred to as 'junior' any more!
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    Forget DIR!

    Humour is a very personal thing and whilst we all edit the normal media we are exposed to to suit our particular tastes, the internet exposes us to other people's and we don't necessarily always 'get it'. I didn't get Seajays humour, I thought his post was a case of laughing at rather than...
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    Forget DIR!

    Although I read this board frequently I don’t post but I feel this thread merits some comment. A level of ignorance (and I mean that as in ‘you don’t know something’ rather than in any way attempting to insult anyone) has progressed this thread. As has been pointed out by others, Divex are...
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