H2Andy
Contributor
i use one when diving tropical (wet suit). i end up with 3 lbs on my belt.
works for me
works for me
Backplate systems: Advantages & disadvantages?
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CIBDiving:
Why?
I use 25# in the pockets, that with the Plate and STA weighs more than I care to grunt around to change out a bottle - for that matter I don't want to lift 25 more pounds over what the rig weights to don and dof it either. In warmer water That wouldn't be a big problem but the lead in the pockets also interfere with putting the belt on, it likes to get twisted and is much harder to straighten out with the pockets full.
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CIBDiving:
See... I knew you had a good reason.
I don't use near that kinda weight. Maybe 6 to 12 pounds TOTAL or 3 to 6 per side. They stay in... no problemo.
I still don't use 'em, like 'em or recommend them... but they seem to work fine (with reasonable amounts of weight.)
H2Andy
Contributor
CIBDiving:
why do you need so much weight? is this common for diving in Alaska?
JeffG
Contributor
Lots of underwear to keep ya warm.H2Andy:
I thought many of the ocean areas of Alaska have a maritime climate. Doesn't get as cold as one might think. Anchorage in January was quite nice.
I'd think those great lake divers are the ones with the serious need for undergarments.
I'd think those great lake divers are the ones with the serious need for undergarments.
JeffG
Contributor
I'm not sure about Alaska, but southern BC you can see water temps from 48-55ish F. I wear 400gm undies...add in salt water. Equals a pile of weight.jagfish:
I use the same undies in the great lakes, but its fresh water. Not as much lead required.
I'm not sure - I haven't DMed a class up here and I've never asked anybody how much they use. Water temp here in winter is ~ 40 f (sometimes down a little lower), that's not too bad but air temp can be < 0 with wind. I used 22# in puget sound but that was with a thinner undie and a 4mm compressed suit. I'm in a trilam now but that 8 to 10 degree diff from the sound is a LOT on a hour+ dive. Main reason, I guess is my size I'm 6'5" and 255, that's a lot of surface area. Being over 50 now I'm not exactly rail thin either 
jagfish:
Anchorage can be, it doesn't get much below 0 here. It depends on when you're here, if the weather is out of the south we get marine air, then temps in the 40s are rather common ( and everything melts to a puddle that refreezes at night). If the weather is from the north then we get the air from the interier (Fairbanks can get to -40 f rather easy) and it can be -20. this can change over nite too.
Water in summer will warm a little too. You don't dive around anchorage however, It's all a Very large mud flat out there and the currents are in the 8 knot range. The most used shore dive from anchorage is the town of Whittier, it's 70 mi SW and you go 2 1/2 miles Under a mountain to get there. Whittier is at the head of a fiord that has glaciers all around it. The city itself averages 260" of snow a year BTW, I was there last weakend the snow was still piled 10 ft high in places. On a clear winter day the air comes off those glaciers and down over the town at -10 f and 30+ mi/hr.
On the plus side, iit can be pleasent in summer with calm sunny days in the 80s.
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