BOTH INTERNATIONAL & INLAND A 200-meter vessel is aground in restricted visibility. Which signal is optional?

Correct Answer: Option A — A whistle signal

Rule 35(g) mandates the bell and gong for a vessel aground. The whistle signal, consisting of one short, one prolonged, and one short blast, is an optional, supplementary signal used to provide additional warning of the vessel's presence and position to any vessel approaching in restricted visibility.