If a watertight door cannot be closed, where is this documented?

• A. Closure Log
• B. Ship's Log
• C. Damage Control Book
• D. Bridge Log

Answer: (A)

The Closure Log is the proper record for any event that affects watertight closures. When a watertight door cannot be closed, you log the incident there—including the door’s location, the time, the reason it won’t close, and any actions taken to try to close it. This keeps a precise, watchstander-accessible history of the ship’s watertight integrity and helps the damage control team coordinate response and prevent flooding. Other logs cover broader ship-wide or navigational records, and the Damage Control Book tracks damage control actions, but the specific documentation of a failed closure belongs in the Closure Log because it directly relates to maintaining watertight integrity.