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272 pages, Hardcover
First published August 5, 2002
The tower above the hatch is ten feet high and just wide enough for a man to enter while wearing a full escape suit. The technique for evacuating is designed to be simple. One sailor at a time opens the bottom hatch and enters the tower. He closes the hatch behind him, sealing himself in the escape chamber, and switches on his individual breathing system. He then flicks open an equalization valve inside the tower, allowing ocean water to pour in and fill the chamber until the pressure inside the tower is equal to that of the water outside. He begins breathing, using his respirator, before pushing up against the upper hatch, swinging it open. He then kicks upward into the open ocean, his lifejacket helping to bring him rapidly to the surface…That is the theory. In practice, the engineering of the hatches presents a daunting challenge. By definition, the escape system is only used by people under extreme stress, in deteriorating mental and physical condition…
