DHR H400 Series

DHR H400 Series Marine Air Horn

The DHR H400 Series is a high-performance pneumatic marine air horn designed for reliable acoustic signalling on seagoing and inland vessels.
Engineered for durability in harsh maritime environments, the H400 combines a robust 316L stainless steel membrane housing with a powder-coated brass horn, ensuring long service life and dependable operation onboard commercial and work vessels.

The horn complies with the requirements of COLREG ’72 sound signalling regulations and is suitable for
seagoing vessels up to 75 metres in length. It is also used on inland navigation vessels operating on European waterways and the German
Seeschifffahrtsstraßen, where the same acoustic signalling requirements apply as for seagoing vessels of equivalent length.

Powered by the vessel’s compressed air system, the H400 delivers a powerful and clearly audible signal, ensuring safe navigation and compliance with international maritime regulations.
The horn requires an airflow of 8 – 12 l/s at 7 bar, which is typically supplied by the vessel’s onboard compressor system with an air storage tank.

Key Features

• Powerful pneumatic marine air horn for vessels
• Suitable for ships up to 75 metres
• Compliant with COLREG ’72 sound signalling requirements
• Durable 316L stainless steel membrane housing
• Powder-coated brass horn for corrosion resistance
• Designed for commercial vessels, workboats and inland navigation vessels
• Reliable operation with onboard compressed air systems

Applications

• Seagoing vessels up to 75 m in length
• Inland navigation vessels
• German maritime waterways (Seeschifffahrtsstraßen for vessels up to 75 meters in lenght)
• Commercial vessels and workboats

The DHR H400 Series ship air horn provides a robust and compliant acoustic signalling solution for vessels requiring dependable marine sound signalling equipment in demanding offshore and inland environments.