The “modular bcd“ or buoyancy device being used in this video, is a specialist “cave diving“ piece of equipment, requiring specialist training. Sidemount buoyancy devices for “Open Water“ diving environment will require more lift capacity; see the current “commercial“ products like the Hollis SMS 100 or Dive Rite Nomad... Steve Martin, PADI & DSAT TecRec Sidemount (twin cylinder) training course promotional video. Course can be taken in twin cylinders, single cylinder course is optional. These dives were ma
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