(nautical) A vertical partition dividing the hull into separate compartments; often made watertight to prevent excessive flooding if the ship's hull is breached.

plural of bulkhead

bulkheads in general

Furnished with a bulkhead or bulkheads.

(nautical) A strong, watertight transverse bulkhead in the fore part of a ship to prevent water flowing aft in the event of a collision

An officially set line along a shoreline, usually outside of the dry land, to demark a territory allowable to be treated as dry land, to separate the jurisdictions of dry land and water authorities, for construction and riparian activities, to establish limits to the allowable obstructions to navigation, etc.

plural of collision bulkhead

plural of bulkhead line