What is the alarm signal for dismissal from a boat station or boat drill onboard a merchant ship?

Correct Answer: Option C — 3 short blasts of the whistle.

Dismissal from boat stations or drills is signaled by three short blasts of the whistle. This specific signal, mandated by 46 CFR 199.110, informs the crew that the emergency drill or boat station evolution is concluded, allowing for an orderly return to normal shipboard duties and operational readiness.