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study was originally prepared by Commander Submarine Force, U.S. Pacific Fleet,
in 1946, and subsequently revised
and reissued as NAV PERS 15.784 in 1949. In 1963, it was expanded with appendix
of Axis submarine losses (OPNAV-P33-100, New 5-46, declassified 10-55, revised
and augmented 4-63). It was updated with corrections and additions in 2007 and
2017 by Naval History and Heritage Command.