What is the correct positioning for all-round lights on a vessel?

The positioning of all-round lights on a vessel is essential for ensuring that they are visible from all angles, especially during times of reduced visibility such as at night or in bad weather. They serve to indicate the presence and heading of the vessel to other mariners.

For all-round lights, the requirement is that they must be situated so as to provide visibility from all directions. This means that the lights must be placed strategically to ensure that they can be seen not only from the front or the sides but also from the rear. This aspect of placement enhances safety and communication on the water, allowing other vessels to determine the orientation and movement of the vessel displaying the light.

The other options do not fully meet the guidelines outlined in the COLREGs. For instance, lights placed only near the bow would restrict visibility from other angles, and stating a specific height, like 4 meters, does not necessarily consider the design and height of the vessel overall. Additionally, the only placement on the stern would mean that those approaching from different directions would not be able to see the light, leading to potential safety risks.