United States Coast Guard Captains License Practice Exam

As the stand-on vessel in an overtaking situation, if the other vessel is showing an alternating red and yellow light, what action is appropriate?

1. Alter course to assist

2. Yield right of way

3. Stand on

4. Heave to

The correct answer is: Stand on

In an overtaking situation, the stand-on vessel is the one that is not required to change its course or speed. The presence of an alternating red and yellow light indicates that the other vessel is classified as a vessel engaged in fishing, which is also restricted in its ability to maneuver. As a stand-on vessel, maintaining your course and speed is crucial because it allows the vessel overtaking to safely navigate past you without confusing signals. The term "stand-on" refers to the requirement for the stand-on vessel to keep its course and speed in order to avoid collisions by allowing the overtaking vessel to make a safe passage. This principle holds even if the overtaking vessel is exhibiting specific lights, as maintaining status allows for predictable behavior on the water, which is important for the safety of both vessels involved. Thus, remaining steadfast in your position helps to ensure clarity in navigation responsibilities.