Kahlenberg Model Q-4-474 Chimetone Air Horns all utilize more than one projector or “trumpet” in their design. These projectors each produce a different fundamental frequency which combine to produce powerful, distinctive, musical chords. To hear a Chimetone Air Horn is to realize that the sound of a vessel can be one of its most impressive aspects. The Model Q-4 474 Chrome Chimetone Air Horn is designed for the most discriminating yachtsman. It is made entirely of bronze and brass, and finished with the highest quality duplex nickel chrome plating.
All of our Kahlenberg ship horns for the High Seas, Inland shipping and Leisure markets are built to the highest quality standards. They offer 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. With a worldwide reputation for durability, distinctive sound and exceptional finish, Kahlenberg Air Horns can be found on most mega yachts in the world. All Kahlenberg audio signals are tested and certified in an in-house laboratory to ensure compliance with the 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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