Station-keeping in a nautical situation is when a vessel is to: * maintain a position in relation to another moving vessel or vessels, such as when ** conducting

underway replenishment Replenishment at sea (RAS) ( North Atlantic Treaty Organization/Commonwealth of Nations) or underway replenishment (UNREP) ( U.S. Navy) is a method of transferring fuel, munitions, and stores from one ship to another while under way. First devel ...

or ** part of a task force or

convoy A convoy is a group of vehicles, typically motor vehicles or ships, traveling together for mutual support and protection. Often, a convoy is organized with armed defensive support and can help maintain cohesion within a unit. It may also be used ...

* maintaining a fixed position in relation to a fixed object or * patrolling a defined sector in relation to a fixed object.

See also