Question 275 Rules of the Road

The correct answer is B. Vessel "B" is the stand-on vessel because it is a sailing vessel. The International Regulations for Preventing Collisions at Sea (COLREGS) state that in a crossing situation, the vessel that is not under power (the sailing vessel "B") is the stand-on vessel and must maintain its course and speed. The vessel under power (the towing vessel "A") is the give-way vessel and must take early and substantial action to avoid a collision. The other options are incorrect because the relative positions of the vessels are not the determining factor in this case - the fact that "B" is a sailing vessel makes it the stand-on vessel regardless of its position relative to "A".