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.

S-0A industrial air horn

Kahlenberg S-0A industrial air horn

The Kahlenberg S-0A industrial air horn offers an extremely economic means of providing warning signals where compressed air supplies are already available.

Constructed in spun brass and cast bronze, the S-0A only has one moving part and is very durable in operation. Pitched at 322Hz this industrial horn will cut through background noise and achieve a sound pressure level (SPL) of 122.5dB at 3m (10ft). It operates at air pressure levels from 50psi to 200psi.

The Kahlenberg S-0A industrial air horn offers a compact installation length of just 433mm and a simple installation. It is offered as standard in brass as pictured, but white powdercoat and bright chrome finishes are optional.

Listen to the S-0A industrial air horn

Kahlenberg S-0A industrial air horn downloads

Kahlenberg S-0A industrial air horn technical information (PDF 1000Kb)

Further information

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