INTERNATIONAL ONLY In a crossing situation on international waters, what does a short blast by the give-way vessel indicate?

Correct Answer: Option D — The vessel is turning to starboard

Rule 34(a) states that one short blast indicates a vessel is altering her course to starboard. In International waters, whistle signals are strictly rudder-action signals, not proposal signals. Therefore, the give-way vessel uses this signal to communicate her actual maneuver to the stand-on vessel to avoid a collision.