Weight with a steel HP120 tank: what to know
An HP120 holds a lot of air and is negative even when empty, so this model removes about 3.5 kg of lead compared with an aluminum 80. Check the setup for trim, because the weight sits high on your back.
Worked example
For an 80 kg diver with an average build, wearing a 5 mm wetsuit and using a steel HP120 tank in saltwater, the calculator estimates 3 kg (6.5 lb). Your number will differ with your body and gear, so enter your own values above and then do a buoyancy check.
Common questions
How much weight for an HP120?
About 3.5 kg less than with an aluminum 80 in this model.
How heavy is an HP120?
Roughly 17.9 kg empty and about 22 kg full. Use the tank weight calculator.
Do I need a weight belt with an HP120?
Often much less, and some divers need none. Check at the surface.
Does a heavy tank affect balance?
It can, since the tank sits high on your back. Adjust trim weights.
Is an HP120 right for beginners?
Ask your instructor. It is heavy to carry even if weighting is simple.
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