self-propelled hyperbaric lifeboat
It is recognised that these unit do provide means of escape for divers in an emergency although the subsequent requirement for life support and recovery may be much more difficult to comply with due to imitation of designed and configuration
a lifeboat that contain a chamber
the diver are evacuated in this unit while still under pressure and it is provide with standard minimum amount gas for the diver's respiration plus other equipment and consumable to ensure they are wellbeing