Weight calculation guide

[Dirk Pitt]

Ok...

Recently completed my OW, during which I was weighted with 10Kg wearing standard tank, 7mm semi-dry in fresh water.

The instructors asked for our body weight prior to the dive and applied a rough calculation

I also did a trial dive abroad .. no wet suit, salt water and needed 5/6 Kg.

Is there a standard calculation based on body weight for diving in both salt and fresh water with a wet/semi-dry suit.

I know I need 10Kg's in fresh water with a semi-dry, so what % increase in weight should I apply for the same gear in salt water?

Sorry if this subject has been covered before, but i'm a bit new to all this and would appreciate any info to use as a starting point.

Regards,

Dirk

 

[Walter]

Not an accurate one. You need to get in the water.

 

[SubMariner]

There are so many variables in calculating your weighting with various exposure protections & diving conditions that there is no real "accurate" guide to weighting, only a general "rule of thumb".

Generally, for an inexperienced diver wearing the 6.5 mm wetsuit with hood etc, Al 80 tank, in fresh water: 10% of body weight +7lbs and adjust from there. For salt water add 3 lbs.

(Sorry... although I'm Cdn I'm a child of Imperial, not metric. Don't know what that would be in kgs. )

However, you are best off doing a buoyancy check and noting your weighing in your log book. That way you will have a point of reference for future dives.

Bonne chance,

 

[ClassAction]

Any rule of thumb for diving a 3mm full or shortie in warm water? Thanks.

 

[Laser]

SubMariner once bubbled...
There are so many variables in calculating your weighting with various exposure protections & diving conditions that there is no real "accurate" guide to weighting, only a general "rule of thumb".

Generally, for an inexperienced diver wearing the 6.5 mm wetsuit with hood etc, Al 80 tank, in fresh water: 10% of body weight +7lbs and adjust from there. For salt water add 3 lbs.

(Sorry... although I'm Cdn I'm a child of Imperial, not metric. Don't know what that would be in kgs. )

However, you are best off doing a buoyancy check and noting your weighing in your log book. That way you will have a point of reference for future dives.

Bonne chance,

MHK in DIRF mentioned 10% plus a pound or two.

 

[MSP Rescue Diver]

In addition to the info already given, see this thread.

Marc