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When a power-driven vessel is overtaking another vessel in a narrow channel, the proper conduct according to maritime navigation rules is to sound a two-blast signal. This signal is a standard communication method that indicates the intent to overtake and is essential for ensuring safety on the water. The two-blast signal alerts the other vessel of the overtaking maneuver, fostering awareness and coordination between vessels in close quarters, particularly in the confined space of a narrow channel. This rule serves to prevent collisions and maintain a clear understanding of navigational intentions among vessels.

In addition to using sound signals, it’s important for the overtaking vessel to ensure that it executes the maneuver safely by assessing the situation and ensuring that there is adequate space to pass the other vessel.