INTERNATIONAL ONLY You are on a power-driven vessel "I" as shown in illustration D036RR below. Vessel "II" is a vessel engaged in fishing. The vessels will pass within 1/2 mile of each other. Which action should you take?

Correct Answer: Option C — Sound one short blast, turn to starboard.

Rule 18(a)(iii) requires a power-driven vessel to keep out of the way of a vessel engaged in fishing. Since you are the give-way vessel, you must take early and substantial action to keep well clear, which includes sounding the appropriate maneuver signal and altering your course to starboard.