The Gem-sub is an exciting high-tech small two-man submersible with an operational depth of 150 feet (50m), designed for one pilot and one passenger. Built to ABS classification rules. This small boat submarine is especially suitable for the leisure industry and yacht suppliers owners, but of course has applications in many other underwater situations. This superbly constructed small submarine has all the components you would expect to ensure a safe, comfortable, and fun underwater adventure. The submarine weight is three tons, and the operational depth is fifty meters.