Mooring

Mooring refers to any means by which a starship is physically connected to a space station, or another ship.

This can be achieved via docking clamps or mooring beams (also called "docking clamps").

Mooring beam - specialized type of tractor beam used for mooring, by starships and space stations during docking procedures.

Docking clamp - mechanical device by which one object is held to another, such as a starship held in place while docked at space stations.
Ships are unable to leave until docking clamps were released, and if the clamps are forced off, there will be considerable damage to the ship in question.