Overtaking a Power-Driven Vessel

Vessel A is overtaking and is the give-way vessel. Vessel B is the stand-on vessel. As the give-way vessel, A must take EARLY and SUBSTANTIAL action to keep clear of the stand-on vessel B.

Vessel A's options for overtaking vessel B: either a course on the starboard side of vessel B, or a course to the port side.

If both vessels are power-driven, sound signals are required. Vessel A must blow one short blast and alter course to starboard, or blow two short blasts and alter course to port, and Vessel B must return the same sound signal(s) to indicate understanding.

9 / 33