Twin tanks with manifold and isolator valve
3+ Independent regulators with first and second stages
1 With long hose (2m/7ft.) and LPI
1 With short hose (~55cm/22 in.) and SPG
1 Per stage/deco tanks with meter hose and O2 SPG
1 Stage decompression tank for 80% or 100%, clearly marked and labeled
1+ Nitrox Stage Tanks with at least 1,400 free litres / 50 cf.
Stage tanks with at least 1,400 free letters/ 50 cf. and independent regulators
2 wing units, or 1 wing and 1 drysuit
response to loss of bladder
A lift bag with at least 22.5 kg / (50 lb) buoyancy
Wetsuit
Mask and fins
2 Line cutters
1 Primary reel with 120m of line
Dive computer, or stopwatch and depth gauge
Writing board, or wet notes
Waterproof diving table, or second dive computer
3 Directional arrows
Compass