““The Americans, Dutch and Australians had lost further vessels as well, notably at the battle of the Java Sea in February. As a result, when the summer of 1942 started, the only significant naval threat remaining to Japan in the Pacific was what remained of the American Pacific Fleet following the attack on Pearl Harbor, and some of those battleships had been pulled back to San Francisco. This fact was not known by Japan, but given their superiority in battleships, the Japanese were not overly concerned about the remnants of the American fleet either way. What had remained untouched by the attack on Pearl Harbor were the American carriers;””