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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.

K-Series air horns

Kahlenberg K-380 Series IMO compliant compact marine air hornIt is tempting to call these marine air horns the babies of the Kahlenberg range but unlike many competitors in this size bracket they still exceed IMO sound signal requirements for vessels up to 20m (66ft). They also have a fantastic big yacht finish in high quality chrome or white to name two options. No nasty plastic, press-fold seams or exposed electrics to fail or mar the look of your boat. Plus they offer very compact install options.

Kahlenberg K-380 air horn

Compact marine air horn for small to medium-sized motorboats and yachts

Fed-up with the puny output of your boat's existing electric horn, or worried that it is not even likely to work when you need it most?

Then you need to consider the Kahlenberg K-380 air horn. Its output exceeds electric horns of similar size and it offers an output of 123.4 dB (A) at one metre in a dual tone of 380Hz and 460Hz. Extremely low air consumption enables it to use a rotary compressor without a separate reservoir, a lighter and more compact solution. This 12V or 24V DC compressor can be easily and safely installed out of the elements, below decks. Alternatively you can install the K-380 with the full P449-20 Compressor Kit and V-170 Valve Kit.

Robustly manufactured of spun and cast brass with a bronze diaphragm and high quality chrome plate finish, the Kahlenberg K-380 air horn will give you a lifetime of service. It can be mounted in the ideal horizontal position without fear of the elements destroying its performance. Once installed you have the peace of mind that comes from knowing your Kahlenberg K-Series air horn meets or exceeeds IMO requirements for vessels up to 20m (66ft).

The Kahlenberg K-380 is easily located in an effective position above decks, measuring just 315mm long by 210mm wide and 128mm high. It weighs 1.6kg.

A range of accessories including compressor kits, valves, tubing and sound-signalling controllers can be offered with this unit.

Kahlenberg UK has a portable K-380 demonstration kit - please call us on +44(0)1635 35 35 35 or email us at enquiries@kahlenberg.co.uk to arrange a demonstration.

Listen to the K-380

Download information

Kahlenberg K-380 IMO-compliant marine air horn brochure and technical information (PDF Format 2217Kb)

Kahlenberg K-460 air horn

The Kahlenberg K-460 air horn is perfect both to retrofit in place of failed or sub-standard electric units and to fit on new builds to enhance the quality of your yacht or motorboat.

Its output, a powerful tone at 460Hz, exceeds IMO ColReg requirements for vessels up to 20m (66ft). This model uses the smaller trumpet of the K-380's twin units and very low air consumption enables it to use a rotary compressor without the need for a reservoir. This horn compressor be easily and safely installed out of the elements, below decks and connected with very small air lines that use instant connections.

Robustly manufactured of spun and cast brass with a bronze diaphragm and high quality chrome plate finish, the Kahlenberg K-460 air horn will give you a lifetime of service. It can be mounted in the ideal horizontal position protection against rain and spray. Once installed you have the peace of mind that comes from knowing your Kahlenberg air horn exceeeds IMO requirements.

The Kahlenberg K-460 air horn measures just 313mm and stands 128mm high. A range if accessories including the compressor, connection tubing and signal controllers, can be offered with this unit.

Download information

Kahlenberg K-460 I MO-compliant marine air horn brochure and technical information (PDF format 444Kb)

Further information

Call Kahlenberg UK now on +44 (0)1635 35353 or email enquiries@kahlenberg.co.uk