What is the main function of a boat horn?

The main function of a boat horn is to signal other vessels or warn of danger. This safety device plays a crucial role in communication on the water, helping to prevent collisions and ensuring that all vessels are aware of each other's presence. Boating often takes place in environments where visibility can be limited or where there may be multiple vessels in close proximity. Using a horn effectively alerts nearby boaters to the operator's location and intentions, which is essential for safe navigation.

The other options mention functions that do not align with the core purpose of a boat horn. For example, using a horn for entertainment, indicating mood, or attracting fish deviates from the essential safety and communication functions that a horn provides in maritime situations. Understanding the proper use of a boat horn is vital for all boaters to ensure a safe and responsible boating environment.