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About Kahlenberg UK

Kahlenberg UK Ltd is the European distributor for Kahlenberg Industries, Inc. providing full European support and local stock for Kahlenberg marine and industrial air horns, sound signals, controllers, air compressors and the company's other products.

Please contact us for further assistance at enquiries@kahlenberg.co.uk or on +44 (0)1635 35353

Sound signal legal requirements

IMO COLREGs bookWhile countries across Europe will have local laws that apply to ship and boat navigation, there is a common requirement worldwide for all leisure, commercial and military vessels to conform to the IMO International Regulations for Preventing Collisions at Sea. As Steve Austin, Senior Policy Lead at the UK Maritime & Coastguard Agency (MCA) explains: "The COLREGs apply to all vessels, there is no differentiation between coded and non-coded vessels. Should the whistles prove not to conform then they will need to be modified or changed."

"Whistles should conform to the performance in COLREGs, Appendix III and the appropriate parts of IEC 60945 to EN60945 which deal with the marine operating environment."

All Kahlenberg products meet or exceed these requirements. Many other new and currently installed sound signals are non-compliant and might be breaching maritime law and invalidating insurance cover.

Marine air horns by size


Marine horns for boats up to 20mMarine air horns for boats up to 20m
Select from the single and twin trumpet Kahlenberg K-Series, the single, twin and triple trumpet Kahlenberg Zero-Series, or larger models in other ranges (see below).


Marine air horns for vessels from 20m to 75mMarine air horns for vessels 20m-75m
Leisure, commercial and military vessels can choose from the Kahlenberg Chimetone range or the S-330 and D-330. Plus the KB-30 electronic horn/hailer system.


Marine air horns for vessels 75m to 200mMarine air horns for vessels 75m-200m
Large superyachts, ships and naval vessels can select from the Kahlenberg Chimetone range, the Kahlenberg KM-DVM-H range and the renowned Triton electric piston horns.


Marine air horns for vessels over 200mMarine air horns for vessels over 200m
Many large ships around the world, including US aircraft carries, rely on Kahlenberg horns including the Kahlenberg KM-DVM-H range and Triton electric piston horns.