In a traffic separation scheme, when joining a traffic lane from the side, a vessel shall do so __________.

When a vessel is joining a traffic lane from the side in a traffic separation scheme, doing so at as small an angle as possible is essential for several reasons. A small angle minimizes the time the vessel spends in the lane, which reduces the risk of interference with other vessels that are already navigating within that lane. It also aids in ensuring that the joining vessel can enter and align with the flow of traffic more safely and efficiently, as larger angle approaches may complicate the situation and lead to confusion or potential collisions.

The purpose of a traffic separation scheme is to organize the flow of maritime traffic, helping to prevent accidents. By entering at a small angle, a vessel maintains better control and situational awareness, allowing for smoother integration into the designated traffic lane. This approach is in line with the principles of safe navigation and traffic management at sea.