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 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.

Kahlenberg D-0A and M-485A Princess 50 case study

Kahlenberg D-0A marine air horns on Princess 50 TallulahKahlenberg UK is pleased to announce the publication of a case study featuring the retrofit installation of Kahlenberg D-0A marine air horns and a M-485A sound signal timer to the Princess 50 MkII Tallulah.

Brian and Dawne Dunton are the boat's very discerning owners  and they chose a set of Kahlenberg D-0A marine air horns controlled by an M-485A automatic sound signal timer in order to retrofit a sound signal that could significantly boost their presence in fog when passagemaking across the English Channel to Jersey, Guernsey and North Brittany waters. The installation was powered by a compact Kahlenberg P449-18 compressor.


The Duntons were looking for IMO compliant sound signals that also met Tallulah's exacting aesthetic and technical standards and the ABS certified Kahlenberg Zero Series marine air horns fitted the bill perfectly.


Read the full Kahlenberg D-0A Princess 50 case study here.

Further information

Call Kahlenberg UK now on +44 (0)1635 35353 or email