In nautical terminology, what is the action of letting go called?

The action of "letting go" in nautical terminology refers to the process of releasing a line or anchor, enabling a vessel to move away from a dock or mooring. The term "cast off" specifically describes this action of freeing the ship from restraints, allowing it to set sail. It is often used in the context of preparing a vessel for departure, where lines that tie the boat to the dock are untied or thrown off.

This term is crucial in maritime operations because it signifies the transition from being secured to being ready for navigation. The other options, while they have their own meanings in nautical or general contexts, do not accurately convey the action of releasing or letting go of lines or anchors. Understanding this specific terminology is vital for effective communication and safe practices in sailing and docking maneuvers.