Kahlenberg Model "KM-250 Air Horn" Industrial Horns are the largest, most powerful air powered horns available. These horns are primarily designed to operate in the most severe outdoor applications. They are simply constructed and extremely reliable resulting in a very low cost of use as compared to more complicated means of sound production.
Alternatively select the heated variant with thermostatically controlled combination manual override and dual electric solenoid valves (230 or 120 VAC / 24VDC) AND heated diaphragm assembly.
This Kahlenberg ship horns for the High Seas and Inland shipping is built to the highest quality standards. It offers owners and captains a highly reliable means of meeting IMO/USCG tone signalling requirements and an aesthetically pleasing element on board with a distinctive sound that will be the envy of everyone. The audio signals are tested and certified against standards set by the International Maritime Organization (IMO) and the Collision Regulations (COLREG).
The "Convention on the International Regulations for Preventing Collisions at Sea (COLREG, 1972 - Annex III) describes the technical details of sound signal appliances with respect to the sound signal intensity and the range of the audibility (see: COLREGS - International Regulations for Preventing Collisions at Sea; Annex Ill - Technical Details of Sound Signal Appliances; Chapter 1. Whistles (check IMO for latest version!)
Ship length [m]: < 20
Ship length [m]: 20 - 75
Ship length [m]: 75 - 200
Ship length [m]: > 200
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