Which vessel is defined as unable to keep out of the way of another vessel?

The definition of a vessel that is unable to keep out of the way of another vessel pertains specifically to a vessel that is restricted in her ability to maneuver. Such vessels include those engaged in operations that limit their ability to alter course or speed, like those working in difficult environments or performing tasks that require stability, such as laying down cable or dredging.

This designation is important within the Rules of the Road because it helps to establish the responsibilities of other vessels in the vicinity. Other vessels must be aware that when they encounter a vessel restricted in its ability to maneuver, they have an obligation to avoid a collision, as the restricted vessel may not be able to take evasive action.

The other vessel types, like power-driven vessels, sailing vessels, and fishing vessels, operate under different circumstances and have varying degrees of maneuverability, thus do not fit the same definition of being unable to keep out of the way. Understanding this helps mariners recognize navigational responsibilities and enhances safety on the water.