Northwest Dive Club

I use an Al LP14 bottle mounted to my backgas. It has a standard DIN valve on it, and I use a US4 first stage. I'd recommend a decent first stage reg that you can find service for (I know I can get mine serviced from anyone that deals with Apeks). I believe its also recommended to detune the IP down...

I'd love to take a gas management class! Alki Cove2 Dive: Underwater Sports Rental Tank with 2900PSI 46min bottom time Max Depth 85' Avg depth ?40'? 3.5min stop at ~18' 1000 PSI remaining upon surfacing (edit) 1900 / 3000 * 77.4 = 49 cu ft (al80s are actually 77.4 cu ft) 40 / 33 + 1 = 2.21212 ata (...

CaptnJack wrote:Boat dive only, just offshore from the gravel quarry conveyor belts.

What about scooters? it looks like there's a road going down to the conveyor belts there -- or is there no public access there?

One thing about going from an Al80 to an HP100/LP80 is that you'll move about 5# off of your waist and onto the tank. If you look at the dry tank weights, the HP100/LP80 should be about 5# heavier, which means that overall your weight getting into the water will be the same between an Al80 and an HP...

hunting around the net, it looks like this site has GPS co-ordinates:

http://www.boydski.com/diving/dives/Mau ... Barges.htm

HP130s all the way. You can dive to 90-100 fsw for 30-35 mins (on EAN32), take a 15-20 minute multilevel stop at 60-40 and then do enough time above 30 to stretch the dive out to 60-90 minutes, and you can surface with enough gas reserve to deal with surface conditions. You will need an exceptionall...

I think the biggest things to think about with any pony setup are going to be: 1. can you determine how much gas is left? can you determine how much gas is left underwater? 2. can you see/feel if the first stage/valve or second stage is free flowing? 3. can you reliably deploy the reg? will it alway...

Another thing to consider is there are are a lot of things you can do to avoid running entirely OOA on your backgas in the first place. You should practice gas management and rock bottom pressures. For an OW diver on an Al80 the rule "10 psi per foot plus 300 psi (but no less than 500 psi)"...

Also, a pony bottle does not eliminate this possibility. There was a fatality a few years ago where the diver (a DM) continued a dive solo, ran his backgas down to zero, and then his pony regulator was stuck behind him where he couldn't deploy it and he either drowned or embolised. Ben Giard: http:...

However, in the unlikely event that he couldn't get his octo to me in time, because it got stuck or something else (this happened to the couple at Cove 2 if I am not mistaken) I would like to know my life is not in his hands. You should really address the "stuck/caught octo" issue by fixi...

But my bottom time is more than 30 times what yours is ... at the rate you're improving, you'll probably be using less gas than me in a year or two ... ... Bob (Grateful Diver) One can only hope . . . Actually, where I think I have a higher RMV is at the beginning of the dive-it may be inflating th...

On Saturday we did a dive on the south line around the monolith and to setup the deco line for the Sunday push. We dropped down and scootered the south line to the monolith (a rusted out ships boiler -- about 25 mins swimming south of the I-beams and about 7 minutes scootering). Under the monolith w...

Answer (and not to ruin it for others): About 0.25-0.35 cu feet/min less than what my RMV is. Exactly what I got. My RMV actually dipped below 0.7 recently, people say it happens around 50 dives or so, and I'm approaching that, so I hope it keeps dropping. heh, I missed the "less than what my ...

dsteding wrote:Answer (and not to ruin it for others):

About 0.25-0.35 cu feet/min less than what my RMV is.

I got .45:

54 / 33 + 1 = 2.63636 ATA

92 cu ft / ( 77 min * 2.53636 ATA ) = .45320 cu ft / min / ata

(which is about equal to my personal best ever)

If anyone wants to start down the road of being able to do this kind of diving, Steve White is offering a Basics Workshop on Oct 14+15 for $175 that'll cover buoyancy, trim, s-drills, frog kicks and such. There's also a $75 rebate if you go on to take DIRF from Steve. No gear requirements, and Mark ...

Yup, Mark owns and operates fifthd. Mark and Walter (who we were supporting on sunday) are two of the three senior SCRET founders that are still around here diving. They've already been down to the Sampson a few times this year, I think and they've got at least another charter to the Sampson and ano...

Governor: http://www.scret.org/Governor/Governor.htm

Governor Reports:

http://www.northwestdiver.com/forums/sh ... php?t=6665
http://www.northwestdiver.com/forums/sh ... php?t=6662

Admiral Sampson: http://www.scret.org/Admiral/Admiral.htm

i saw that a few years ago... was it 80 feet or 80 meters?

Another cool thing about scooters is they intensify the illusion that you're a submarine. I don't know if anyone else gets this, but i own both the directors cut and the rediculously long version of Das Boot, so it fairly frequently occurs to me... Today we were out nearly to 3k when something BIG (...

so when you guys are planning to go deep like this and make deco stops are there divers with you working as a suport team that do not have to meet deco cometmints or do you do all your own stageing and recovery of the stage bottles I have no wish to start deco diving but it does intrest me Sparky f...

We had 3 teams of two in the water today. Two teams did setup and dropped O2 + 70 foot bottles and staged bottom gas 3k feet north of the I-beams (roughly the north end of the boat launch parking lot). The push divers (mark and walter) got out to 9.4k feet. We did the stage bottle drop and everythin...

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we took a wreck workshop at fifthd where they basically turned up the game on us until we broke, and we broke really badly with it came to following a line in zero viz. we put down 400 ft of line, then turned around, closed our eyes and tried to follow it out. somehow one of the placements slipped a...

its the new DIR gear config... JJ just posted it to quest... a Lol- Man, that's nuts. I admire those cave diving loons, but that pic alone pretty much makes me want to either stay in open water, or get a rebreather. I mean, good lord, how much you figure all that gear weighs? 300 lbs? ](*,) <---- j...

its the new DIR gear config... JJ just posted it to quest...