Question 425 Rules of the Road

The correct answer is C) Two white masthead lights in a vertical line. According to the International Regulations for Preventing Collisions at Sea (COLREGS), a power-driven vessel pushing ahead or towing alongside is required to display two white masthead lights in a vertical line in addition to the other required navigation lights. This arrangement of two white masthead lights indicates that the vessel is engaged in towing or pushing operations. The other answer choices are incorrect because they do not match the specific lighting requirements for a power-driven vessel engaged in towing or pushing. Options A and B describe different light configurations, while option D would indicate a vessel not engaged in towing or pushing.