Anachronisms: When Lt Crandall is arguing with Lcdr Vandewater in the latter's office over taking command of the Echo, a ship with hull number ARS-38 is visible through his office window. The ship in question, the USS Bolster, was not launched until 23 December 1944, while the movie is set prior to 2 March 1943, the date of the beginning of the Battle of the Bismarck Sea, described at the end of the movie.
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