What does the term "stand-on vessel" refer to?

The term "stand-on vessel" refers to the vessel that is required to maintain its course and speed when engaged in a crossing situation with another vessel that is obligated to give way. This designation arises from the COLREGs, which are a set of rules established to prevent collisions at sea. In situations where two vessels are approaching each other, the stand-on vessel should continue on its current path, as it has the right of way. The intention behind this rule is to enhance predictability and safety in maritime navigation, allowing the give-way vessel to take action to avoid a collision.

The other definitions do not accurately describe the role of a stand-on vessel. The vessel that must give way is not considered a stand-on vessel; rather, it is the vessel that is required to adjust its course or speed to avoid a collision. The vessel that is overtaking another has different rules it must adhere to, typically involving responsibility to pass safely without interfering with the stand-on vessel. A vessel that is moored or anchored is also outside normal navigation and does not fall under the active scenarios described by the stand-on vessel definition.