a watertight partition built across a
ship from one side to the other. A
ship can have more than one
bulkhead. For
example, a collision
bulkhead is one built in the front of a
ship, designed to
prevent flooding and the consequent sinking of a
ship which has had a hole smashed into the front of it. Where there are bulkheads
running across other parts of a
ship, then there are watertight doors fitted where access through the
bulkhead is required.
—NVRD Approved Glossary