After a lot of thinking and searching these past months about how much Ultra info US Subs really had on Japanese shipping movements I decided to put my tails back for the following reason best said on Hondo's site: "Luckily, the Japanese were a talkative bunch..." (quote below)
Art
Quote:
from Hondo's: http://www.valoratsea.com/subwar.htm
"Fortunately, major intelligence advances were being made at this time by the United States in intercepting and deciphering Japanese communications. The three cryptanalysis units, Cast (Cavite, Manila Bay), Hypo (Hawaii) and Negat (Navy H.Q., Washington) were highly successful in breaking the latest Japanese code. Luckily, the Japanese were a talkative bunch, and messages concerning their movements, strategies and plans were frequently broadcast over their military airwaves. Possessing the ability to decipher the communications, the US codebreakers would forward this critical information to submarine captains in the form of the famous "Ultra"."
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