12V 200W Remote Control Sound Alarm Siren with MP3 Play in USB Interface Loudspeaker Megaphone Horn for Car Truck Boat Train Ship Ambulance Police Fire Alarm : Amazon.ca: Electronics
Amazon.com: AUTO-STYLE Rainbow Horn with 49 Sounds/Microphone/MP3 Connector : Automotive
Foghorn Free sound effects and audio clips
Boat Fog Horn Sound Effect MP3
Pyle PLMR21BT Marine Boat USB/SD/MP3 Bluetooth Stereo Receiver Bundle Combo With 4x 3" Ceiling/Wall Mount Speaker + 2x 8'' Inch PA Horn Speaker + Metra Underdash DIN Kit + Enrock 50Ft 16g