Which sailing vessels may carry their navigation lights in one combined lantern at or near the top of the mast?

Sailing vessels in convoy are permitted to carry their navigation lights in one combined lantern at or near the top of the mast for ease of visibility and identification. This regulation is set out in the COLREGs to simplify the lighting configuration for vessels that are operating together in close proximity, reducing clutter on their masts and making their navigation lights easier to recognize.

The combined lantern serves to display the required navigation lights for the vessel’s under sail operation while also signalizing its status as part of a group or convoy. This is particularly important for enhancing safety and awareness among nearby vessels, allowing for better maneuverability and reducing the chances of confusion in navigation.

In contrast, other types of vessels listed do not receive the same allowance because they may be subject to different regulations regarding their navigation lights based on their size or purpose. For instance, fishing vessels have specific lighting requirements related to their operations, while vessels under 7 meters typically have reduced requirements but do not combine lights in the same manner as vessels in convoy. Overall, this distinction is critical for ensuring safe interaction between various types of vessels in a maritime environment.