What is the responsibility of a stand-on vessel?

The responsibility of a stand-on vessel is to maintain its course and speed in the event of a potential collision with another vessel. This principle is grounded in the International Regulations for Preventing Collisions at Sea (COLREGs), specifically Rule 17, which outlines the actions vessels should take in situations of risk of collision.

A stand-on vessel is typically the one that has the right of way and is expected to continue its current path unless it becomes apparent that a collision cannot be avoided with the give-way vessel. By maintaining course and speed, the stand-on vessel allows the give-way vessel an opportunity to carry out the necessary maneuvers to avoid an accident. This approach helps to create predictability in the movement of the vessels involved, which is crucial in ensuring safe navigation.

In contrast, changing course to avoid collision would typically be the responsibility of the give-way vessel, as it must take action to keep clear of the stand-on vessel. Increasing speed to pass the other vessel or using signals to demand a change from the other vessel can complicate the situation and are not standard directives in maintaining safety at sea. Therefore, the correct understanding of the stand-on vessel's role revolves around maintaining its course and speed to promote safe navigation practices.