What must a vessel do if she is overtaking another from a direction more than 22.5° abaft her beam?

When a vessel is overtaking another vessel from a direction more than 22.5° abaft her beam, the appropriate action is to keep out of the way of the vessel being overtaken. This rule is established to ensure safety on the water, as the overtaking vessel has a responsibility to avoid collision with the vessel being overtaken. In this situation, the overtaking vessel must take all necessary measures to maneuver safely around the other vessel, allowing it to maintain its course and speed. This promotes safe navigation and prevents confusion or potential collisions in busy waterways.

While ensuring one is in the correct shipping lane, reducing speed, or signaling attention can be important in certain contexts, the primary obligation when overtaking is to keep clear of the vessel being passed. Thus, the focus in this instance should be on avoiding interference with the movements of the other vessel.