What must the stand-on vessel do when in a navigation situation?

In a navigation situation, the stand-on vessel is required to maintain its course and speed. This principle is based on the rules of the road, specifically the collision regulations which are designed to prevent accidents at sea. The stand-on vessel has the right of way and is expected to continue its current path unless it becomes clear that a collision is imminent. By maintaining its course and speed, the stand-on vessel helps ensure that both vessels can assess the situation accurately and avoid a collision through the actions of the give-way vessel, which is responsible for changing course and speed to avoid the stand-on vessel. This approach promotes safety and predictability in navigation, allowing for smoother traffic flow and reducing the risk of accidents.