<Ul> <Li> USS Honolulu </Li> <Li> USS Boise </Li> <Li> USS Phoenix </Li> <Li> USS St. Louis </Li> <Li> USS Helena </Li> </Ul> <Li> USS St. Louis </Li> <P> The Amphibious Force was formally known as Commander, Amphibious Forces, Pacific Fleet (ComPhibPac). On 7 December 1941 the Amphibious Force comprised the Army's 3rd Infantry Division at Fort Lewis, under Army operational control, the 2nd Marine Division, the 2nd Marine Aircraft Wing, the 2nd Defense Battalion (see Marine defense battalions), and a depot . One of PhibPac's subordinate commands during World War II was Transports, Amphibious Force, Pacific Fleet, or TransPhibPac . The commander of TransPhibPac was known as ComTransPhibPac . </P> <P> In December 1941, the fleet consisted of nine battleships, three aircraft carriers, 12 heavy cruisers, eight light cruisers, 50 destroyers, 33 submarines, and 100 patrol bombers . This was approximately the fleet's strength at the time of the Japanese attack on Pearl Harbor . That day, the Japanese Combined Fleet carried out the attack on Pearl Harbor, drawing the United States into World War II in the Pacific . The Pacific Fleet's Battle Line took the brunt of the attack, with two battleships destroyed, two salvageable but requiring lengthy reconstruction, and four more lightly to moderately damaged, forcing the U.S. Navy to rely primarily on aircraft carriers and submarines for many months afterward . </P>

Where was the us pacific fleet based in 1941