What should the stand-on vessel do when one vessel is required to give way?

The stand-on vessel is the one that has the right of way in a crossing situation as per the COLREGs. When another vessel is required to give way, the stand-on vessel should maintain its course and speed. This action is important for several reasons:

1. Predictability: By keeping its course and speed, the stand-on vessel allows the give-way vessel to make safe and informed decisions. If the stand-on vessel alters its course or speed unnecessarily, it could create confusion and increase the risk of collision.

2. Safety: The COLREGs are designed to promote safe navigation and minimize the risk of accidents. The stand-on vessel must make sure it is predictable in its actions, as this is pivotal in allowing the give-way vessel to take appropriate action.

3. Regulatory Compliance: Following the regulations helps ensure that all vessels are operating under the same rules, thereby creating a consistent maritime environment. The stand-on vessel adhering to its obligation reinforces the principle that vessels must respect their designated roles during encounters at sea.

In contrast, increasing speed or maneuvering might not signify to the give-way vessel what actions it should take, and sounding the horn could imply a need for communication rather than indicate the stand-on