What signaling devices are pilots required to use when travelling to an emergency incident on the waterways?

When responding to an emergency incident on the waterways, pilots are required to use an air horn and siren as signaling devices. This is because these devices are specifically designed to emit loud, easily recognizable sounds that alert others to the presence of an emergency rescue boat. The air horn and siren serve to ensure that vessels and individuals in the vicinity are aware of the approaching emergency responders, allowing them to move aside or provide assistance as necessary, thereby enhancing safety on the water.

Using sound-based signaling devices like an air horn and siren is particularly effective in densely crowded or noisy environments, where visual signals might not be immediately noticed. These signaling devices also comply with the regulatory requirements for emergency response situations, making their use crucial for effective communication and operation during emergencies on the waterways.