What is the sound signal for leaving the dock?

The sound signal for leaving the dock is one long blast. This signal is used to indicate to other vessels that you are departing from a standstill position, such as a dock or mooring, and thus, it serves as a warning to nearby boats that you are about to maneuver. The long blast is a universally recognized signal in maritime communication, helping to ensure safety by making your intentions clear to others on the water.

This specific signal helps in preventing collisions or misunderstandings, particularly in areas where visibility may be limited or where other vessels may be in close proximity. It emphasizes the importance of clear communication and adherence to navigational rules while operating a pleasure craft.