What is the general guideline for anchoring in a narrow channel?

The guideline for anchoring in a narrow channel emphasizes the importance of maintaining navigational safety. Vessels should generally avoid anchoring if circumstances allow, as doing so could obstruct the navigation of other vessels and create a hazard for both the anchored vessel and those navigating through the channel. Narrow channels are often busy areas where vessel traffic needs to maintain a clear passage, and anchoring can impede this flow.

In contrast, anchoring in the deepest part of the channel or anywhere within it is not advisable because it can lead to collisions or groundings, especially if other vessels must maneuver around the anchored vessel. The guideline helps to ensure that vessels can pass safely and efficiently without unnecessary risks.