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Yet Another Proper Weighting Question

Discussion in 'New Divers and Those Considering Diving' started by Straegen, Mar 15, 2009.

  1. Straegen

    Straegen New Fish ScubaBoard Supporter

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    This number assumes you are neutral with no additional weight. Most people in salt take a few pounds to sink naturally which is why these people should use a SS backplate. If you are neutral when you enter the water with nothing on, a very light backplate is probably the best solution. My understanding is, the backplate should offset as best it can your own personal buoyancy which doesn't change during a dive.

    I think if you ask Tobin what he sells for singles, you will find not a lot of 40s go out the door. Most rec divers don't wear exposure suits nearing 30lbs of buoyancy.

    I think you plan for 0 buoyancy out of your wetsuit, but I would be impressed if a rec diver got a neoprene wetsuit negative.

    I don't think this is always true. I know your tank weighs more in the beginning but in many cases diving in a wetsuit more than compensates for this at the surface. I think for wetsuit divers they are probably most negative at the first part of the dive at their deepest depth and most buoyant at the end of a dive.

    I would think a person would plan for steel tanks if they don't know. You can always add weight to a BPW to compensate for a lighter AL80. If your BPW with steel BP and tank far outweigh a divers natural buoyancy, that I would consider a bad idea. I would keep in mind that too much ditchable weight allows for the possibility of an uncontrolled ascent which can be bad as well.
     
  2. dpaustex

    dpaustex Instructor, Scuba

    # of Dives:
    Location: lost somewhere under the sea....(and central Texas
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    I have to agree with the folks that say get in the water. You can calcualte all you want, but the in-water test is the BEST way.

    Do the eye-ball level test (you should float at eyeball level with ALL of your gear on, and a full tank), with a lung full of air.

    If you set your weights for that buoyance on the surface (empty BC of course), then you'll be pretty near perfect.

    Remember, if you're overweighted, you're having to push that extra weigth through the water. The faster you burn calories, the quicker you draw down your tank.
     

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