COLREGS In Depth Rule 9 Narrow Channels

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A narrow channel is a part of a waterway that is not wide enough for two ships to safely pass each other. In the context of Colregs International Regulations for Preventing Collisions at Sea, a narrow channel is defined as a channel that is less than 300 meters wide or a channel that has an area of water that is designated as a narrow channel by the relevant authority. When navigating in a narrow channel, ships must keep to the starboard side of the channel and avoid obstructing the passage of other vessels. The purpose of these rules is to prevent collisions and ensure the safe and efficient navigation of ships in confined waters.