What is the height of the highest fixed point on the vessel?

The height of the highest fixed point on a vessel is crucial for safe navigation, particularly when considering bridge clearances and other potential overhead hazards. The correct height listed as 13'1" represents the measurement typically recorded on the vessel's documentation, which reflects the highest point that remains fixed and cannot be lowered or moved.

This information is essential for a coxswain during operations in confined areas or when transiting under structures, as it ensures the vessel can safely pass without risk of collision with those overhead structures. Knowing this fixed height allows the coxswain to make informed decisions regarding the course and speed, reducing the risk of accidents that could occur from miscalculating clearance.

The other options, while they may represent other potential heights on a vessel, do not accurately reflect the specification for the highest fixed point. The emphasis on the highest fixed point assists in maintaining awareness of navigation safety protocols.