Boatswain's Call (U.S. Navy Bluejacket Manual 1941)abbot.us/whistle/whistle.pdf ·...
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Boatswain's Call (U.S. Navy Bluejacket Manual 1941)abbot.us/whistle/whistle.pdf · 2005-09-23 · and each user of a call has his own method of tuning his call to shrill note required