In a crossing situation, what is the role of the give-way vessel?

In a crossing situation, the role of the give-way vessel is to alter its course to avoid a collision with the stand-on vessel, which should maintain its course. This means that the give-way vessel should take proactive measures to ensure safe navigation by changing its direction or speed to keep a safe distance from the stand-on vessel.

The choice of altering course to maneuver astern of the other vessel reflects the principle of prioritizing safety on the water. By taking appropriate action, the give-way vessel is demonstrating its responsibility to avoid potential hazards.

The other options do not align with the obligations defined by the COLREGs. Maintaining course without changing would be inappropriate, as it would potentially lead to a collision. Increasing speed may also complicate the situation rather than alleviating it, and signaling does not fulfill the immediate obligation to avoid the other vessel, which is why adjusting course is the correct response in this context.