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

The guidance for anchoring in a narrow channel emphasizes that vessels should avoid anchoring whenever possible to ensure the safe passage of other vessels navigating through the channel. Narrow channels often have limited space, and anchoring could obstruct the navigation routes, leading to potential collisions or hazards. This principle is in line with the regulations that prioritize the safety and efficient movement of all vessels in constrained waterways.

Anchoring in the deepest part of the channel can still pose risks to navigation, and the notion that a vessel can anchor anywhere in the channel is impractical and unsafe due to the possibility of interference with other vessels. The stipulation about anchoring at least 50 meters from the channel does not reflect any specific COLREGs guidelines, which focus on the principle of not anchoring if it interferes with navigation. Thus, when in a narrow channel, the best practice is to avoid anchoring if circumstances allow it, to maintain safe and unobstructed passage for all vessels involved.