Stand Off

To remain or move away from a shore, vessel, hazard or position rather than approach it closely.

The instruction can mean maintaining sea room, waiting clear of an entrance, increasing distance from danger or holding outside an operating area. It describes an intended relationship, not one fixed distance or manoeuvre.

A safe stand-off distance depends on position uncertainty, depth, wind, current, traffic, vessel handling and the hazard’s movement or exclusion zone. Course, speed and monitoring must be chosen for the circumstances rather than treating the phrase as proof that clearance is adequate.