What does the term "cast off" mean?

The term "cast off" refers to the action of throwing off or letting go of a line or mooring that secures a vessel to the dock, allowing it to depart. This term is commonly used in maritime contexts where the act of releasing the boat from its moorings is necessary for movement. It signifies the transition from being tied to a dock to becoming free and navigable on the water. The phrase embodies the essence of setting a ship to sail, which is crucial during the departure process.

In maritime operations, it is essential to properly cast off in order to ensure safe and efficient movement of the vessel, emphasizing the importance of this terminology in the training and practical applications of naval operations.