Which bulkheads serve as boundaries in DC construction?

• A. Transverse bulkheads
• B. Longitudinal bulkheads
• C. Aft bulkheads
• D. Fore bulkheads

Answer: (A)

Watertight compartmentalization is the backbone of damage control. The bulkheads that define and bound these compartments are the transverse bulkheads. They run across the ship from one side to the other, creating distinct, watertight sections that can be isolated from one another to limit flooding. When you install or close watertight doors between adjacent compartments, you’re relying on these transverse walls to keep water from spreading side-to-side and to preserve buoyancy in the rest of the vessel. Longitudinal bulkheads, which run fore-and-aft, do contribute to overall subdivision and strength, but they’re not the primary boundaries used to contain flooding in the standard DC layout. Fore and aft bulkheads are the end walls of a space, not the main barriers that divide the ship into watertight compartments.