What is a sea cock used for in boat operations?

A sea cock, also known as a seacock, is a valve that controls the flow of seawater into or out of a boat. It is primarily used to manage seawater cooling systems, such as those found in engine cooling setups. When the sea cock is opened, seawater can flow into the engine or other systems that rely on seawater for cooling, preventing overheating. Conversely, when it is closed, it prevents seawater from entering the boat, which is crucial during maintenance or when the boat is not in use.

The importance of the sea cock lies in its role in regulating seawater flow, which directly impacts the efficacy and safety of the vessel's cooling system. This function highlights its relevance in maintaining optimal operational temperatures for engines and preventing potential damage.