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Amazon.com: acme Boatswain Bosuns Pipe Nickel-Plated High Pitched Notes Silver Whistle 12 : Musical Instruments
Grey Funnel Line - Boatswain's Call A boatswain's call is a whistle used on naval ships by a boatswain. It is pronounced, and sometimes spelled, " bosun's call". The use of the boatswain's
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