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Mobile app with USN Boatswain's Mate information.
USN "BosunM8" app includes USN Boatswain's Mate references (BM, Seaman and BMR training manuals).
Sound files for all United States Navy Boatswain's Pipe calls (All Hands, Belay, Heave Around, Mess Call, Pass the Word, Pipe Down, Piping the Side, Secure, Sweepers and Turn To).