The H400 Maritone is the first air horn developed by DHR which has been approved according the international rules of Colreg ‘72. An excellent whistle for seagoing vessels with a maximum length of 75 meters. It has an audible range of more than 1 nautical mile. The combination of high quality materials and precision manufacturing, provides superior durability for a lifetime operation. With the introduction of the attractive H400 Maritone, DHR positions itself as a pioneer in advanced maritime signalling solutions.
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