What is the minimum horizontal field of vision required from each bridge wing on a ship?

The minimum horizontal field of vision required from each bridge wing on a ship is 225 degrees. This specification is crucial for ensuring that the navigating officer has an adequate view to monitor the surroundings, which is essential for safe navigation and for avoiding collisions. A field of vision of 225 degrees allows the officer to see not only what is directly ahead but also significant sections of the area to each side and slightly behind the ship, providing a comprehensive view that enhances situational awareness.

This requirement is particularly important in busy shipping lanes or when maneuvering in port, where the risk of encountering other vessels, floating debris, or navigational hazards is heightened. By having this extensive field of vision, the crew can make informed decisions and respond effectively to any potential threats to safety.

In contrast, fields of vision that fall below this threshold would limit the officer’s ability to detect approaching vessels or obstacles, potentially compromising navigation safety.