A vessel is overtaking when she approaches another from more than how many degrees abaft the beam?

The scenario described involves the concept of overtaking in navigation, which is critical for determining which vessel has the right of way and how to properly navigate in close quarters. When a vessel is overtaking another, it means she is approaching from behind, a situation detailed in the Rules of the Road.

The correct angle for determining when a vessel is overtaking another is when she approaches from more than 22.5 degrees abaft the beam of the other vessel. This means that the overtaking vessel is coming from behind the side of the vessel being overtaken at an angle greater than 22.5 degrees. This designation is important because it helps clearly distinguish between overtaking situations and crossing situations, where different rules apply regarding which vessel must give way.

By understanding this angle, mariners can effectively communicate maneuvers and ensure safe navigation, as the vessel that is overtaking must keep clear of the other vessel until it’s safe to pass. Recognizing the defined angle of 22.5 degrees is crucial for compliance with the International Regulations for Preventing Collisions at Sea (COLREGs) and promotes safe practices on the water.