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§ 65 Installations and equipment for manned underwater operations

Diving bells shall have an internal volume of at least 4.5 m3. If the diving bell is designed for more than two divers, there shall, for each extra diver, be an additional internal volume of 1.5 m3.
Compression chambers for saturation diving shall have an internal height of at least 200 cm measured from the floor in the centre of the chamber. There shall be an internal volume of at least 4 m3 for each person.
The umbilical cord to subsea chambers shall allow for controlled disconnection in the event the support vessel loses its position. In addition, it shall be easy to find the umbilical so that necessary supplies to the subsea chamber can be re-established.
Section last changed: 01 January 2011

For design of plants and equipment for manned underwater operations on vessels, see Section 1.
For general requirements related to design of plants, systems and equipment for manned underwater operations, see Section 10.