In a crossing situation, what action should the stand-on vessel normally take?

Answer: B — maintain course and speed

In a crossing situation under the Rules of the Road, the stand-on vessel is the one that has the right of way. Maintained course and speed is crucial for the stand-on vessel because it signals its intentions clearly to the give-way vessel. This behavior reduces confusion and allows for predictable navigation, enhancing overall safety at sea. By maintaining its course and speed, the stand-on vessel is following the rules designed to prevent collisions. If the give-way vessel doesn’t take the appropriate action, the stand-on vessel would still be in a position to avoid a collision by adjusting course if necessary. The stand-on vessel only needs to take action to avoid a collision if the give-way vessel fails to do so. While changes in speed can be considered, they might lead to unpredictable movements and could create a risk of collision. Similarly, preparing to give way or sounding the danger signal is more appropriate for the give-way vessel. The primary function of the stand-on vessel is to communicate that it is maintaining its course and will only alter its speed or path if it becomes apparent that the give-way vessel is not taking action to avoid a collision.