TheCodeBreakers
ex-submariner himself, relayed them to Voge, who broadcast them to the
American submarines. This fattened their kill. Vice Admiral Charles A.
Lockwood, Jr., who was COMSUBPAC during most of the war, estimated
that cryptanalytic information stepped up American sinkings by about
one third on the trade routes to the Philippines and the Marianas.
Eventually the submarine commanders received it so regularly that they
complained if a convoy reached its noon position half an hour late!
The pigboats accounted for nearly two thirds of Japanese merchant
tonnage sunk during the war. Their torpedoing of 110 tankers from the
East Indies resulted in oil shortages in the homeland that prevented the
training of badly needed pilots and forced a split-up of Japan's Navy,
with serious tactical results. Starvation at home caused Japan to make
surrender overtures even before the islands were invaded, before the
atom bombs exploded. After the war, Tojo said that the destruction of the
annaabi.ee 
