In a crossing situation to avoid risk of collision, the vessel that has the other on her own STARBOARD side shall keep out of the way.

In a crossing situation to avoid risk of collision, the vessel that has the other on her own STARBOARD side shall keep out of the way.

• A. STARBOARD
• B. PORT
• C. AFT
• D. FORE

Answer: (A)

In a crossing situation, the rule that matters is who has the other vessel on their starboard side. If you see the other vessel on your right-hand side (your starboard side), you are the give-way vessel and must take early and substantial action to avoid a collision. That’s why the correct choice is the starboard side—your starboard is the side where the other vessel is located, and you must keep out of the way. The other options don’t fit because they describe other directions or sides (left/port, behind, or ahead) rather than the specific situation of having the other vessel on your starboard side.

In a crossing situation, the rule that matters is who has the other vessel on their starboard side. If you see the other vessel on your right-hand side (your starboard side), you are the give-way vessel and must take early and substantial action to avoid a collision. That’s why the correct choice is the starboard side—your starboard is the side where the other vessel is located, and you must keep out of the way.

The other options don’t fit because they describe other directions or sides (left/port, behind, or ahead) rather than the specific situation of having the other vessel on your starboard side.