BOTH INTERNATIONAL & INLAND Which light may be displayed to assist in the identification of submarines operating on the surface?

Correct Answer: Option A — intermittent flashing amber/yellow light

Annex I, Section 13 of the COLREGS and 33 CFR 84.13 allow for the display of an intermittent flashing amber/yellow light by submarines to assist in their identification when operating on the surface. This unique signal helps prevent collisions by distinguishing these vessels from standard commercial traffic.