International Rules for Sound Signaling, IMO, (72 COLREGS)

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  1. Rules for Marine Horns (72 COLREGS) How do you choose the right horn (ship’s whistle) for your vessel?    What are the regulations? Before 1972, selection of a ship's whistle was largely a subjective decision; as was approval by regulatory agencies. Generally speaking, an "adequate" sound signal was selected ...

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