What action should a vessel take when overtaking on the port side?

When overtaking on the port side, signaling intent to pass with one short toot is the appropriate action. This sound signal is a marine communication method used to convey your intentions to other boat operators. By using one short blast, you clearly indicate to the vessel you are overtaking that you plan to pass on their left side.

This action helps promote safety and ensures that the operator of the other vessel is aware of your maneuvers, allowing them to anticipate and adjust as necessary. It's important in boating to communicate effectively, especially in situations where visibility or proximity may be limited.

Maintaining speed and course, decreasing speed, or giving way may not communicate your intentions adequately to the other vessel, potentially leading to confusion or unsafe situations while maneuvering.