According to the 46 CFR regulations applicable to tests, drills, and inspections for offshore supply vessel operations, for an OSV that is expected to be away from shore for at least 48 hours, what is the requirement for when testing communications between the pilot house and the engine room must be accomplished prior to departure?

Correct Answer: Option B — 12 or fewer hours before departure.

46 CFR 131.515 requires that for offshore supply vessels, the communication system between the pilot house and the engine room must be tested within 12 hours prior to departure. This ensures that critical maneuvering commands can be reliably transmitted during the vessel's transit from the dock.