Battle of Tassafaronga - Aftermath

Aftermath

Takanami's surviving crew abandoned ship at 01:30, but a large explosion killed many more of them in the water, including the destroyer division commander, Toshio Shimizu, and the ship's captain, Masami Ogura. Of her crew of 244, 48 survived to reach shore on Guadalcanal and 19 of them were captured by the Americans.

Northampton's crew was unable to contain the ship's fires and list and began to abandon ship at 01:30. The ship sank at 03:04 about 4 miles (6 km) from Doma Cove on Guadalcanal (09°12′S 159°50′E / 9.2°S 159.833°E / -9.2; 159.833). Fletcher and Drayton rescued the ship's 773 survivors.

Minneapolis, New Orleans, and Pensacola were able to make it the 19 miles (31 km) to Tulagi on the morning of December 1 where they were berthed for emergency repairs. The fires on Pensacola burned for 12 hours before being extinguished. Pensacola departed Tulagi for rear area ports and further repair on December 6. After construction of temporary bows from coconut logs, Minneapolis and New Orleans departed Tulagi for Espiritu Santo or Sydney, Australia on December 12. All three cruisers required lengthy and extensive repairs. New Orleans returned to action in August, Minneapolis in September, and Pensacola in October 1943.

The battle was one of the worst defeats suffered by the US Navy in World War II, third only to the Attack on Pearl Harbor and the Battle of Savo Island. The battle, along with the losses suffered during the Battle of Savo Island, Cape Esperance and the Naval Battles of Guadalcanal temporarily left the US Navy with only 4 operational heavy cruisers and 9 light cruisers in the entire Pacific Ocean. In spite of his defeat in the battle, Wright was awarded the Navy Cross, one of the highest American military decorations for bravery, for his actions during the engagement. Mitigating to some degree the destruction of his task force, Wright, in his after-action report, claimed that his force sank four Japanese destroyers and damaged two others. Halsey, in his comments on Wright's report, placed much of the blame for the defeat on Cole, saying that the destroyer squadron commander fired his torpedoes from too great a distance to be effective and should have "helped" the cruisers instead of circling around Savo Island. Tanaka claimed to have sunk a battleship and two cruisers in the battle.

The results of the battle led to further discussion in the US Pacific Fleet about changes in tactical doctrine and the need for technical improvements, such as flashless powder. It was not until eight months later that the naval high command recognized there was serious problems with the functioning of the torpedoes. The Americans were still unaware of the range and power of Japanese torpedoes and the effectiveness of Japanese night battle tactics. In fact, Wright claimed that his ships must have been fired on by submarines since the observed position of Tanaka's ships "make it improbable that torpedoes with speed-distance characteristics similar to our own" could have caused such damage, though Tanaka states that his torpedoes were fired at a range as short as three miles. The Americans would not recognize the true capabilities of their Pacific adversary's torpedoes and night tactics until well into 1943. After the war, Tanaka said of his victory at Tassafaronga, "I have heard that US naval experts praised my command in that action. I am not deserving of such honors. It was the superb proficiency and devotion of the men who served me that produced the tactical victory for us."

In spite of their defeat in the battle, the Americans had prevented Tanaka from landing the desperately needed food supplies on Guadalcanal, albeit at high cost. A second Japanese supply delivery attempt by 10 destroyers led by Tanaka on December 3 successfully dumped 1,500 drums of provisions off Tassafaronga, but strafing American aircraft sank all but 310 of them the next day before they could be pulled ashore. On December 7, a third attempt by 12 destroyers was turned back by US PT boats off Cape Esperance. The next night, two US PT boats torpedoed and sank the Japanese submarine I-3 as it attempted to deliver supplies to Guadalcanal. Based on the difficulties experienced trying to deliver food to the island, the Japanese Navy informed Imamura on December 8 that they intended to stop all destroyer transportation runs to Guadalcanal immediately. After Imamura protested, the navy agreed to one more run to the island.

The last attempt to deliver food to Guadalcanal by destroyers in 1942 was led by Tanaka on the night of December 11 and consisted of 11 destroyers. Five US PT boats met Tanaka off Guadalcanal and torpedoed his flagship Teruzuki, severely damaging the destroyer and injuring Tanaka. After Tanaka transferred to Naganami, Teruzuki was scuttled. Only 220 of the 1,200 drums released that night were recovered by Japanese army personnel on shore. Tanaka was subsequently relieved of command and transferred to Japan on December 29, 1942.

On December 12, the Japanese Navy proposed that Guadalcanal be abandoned. Despite opposition from Japanese Army leaders, who still hoped that Guadalcanal could eventually be retaken from the Allies, on December 31, 1942 Japan's Imperial General Headquarters, with approval from the Emperor, agreed to the evacuation of all Japanese forces from the island and the establishment of a new line of defense for the Solomons on New Georgia. The Japanese evacuated their remaining forces from Guadalcanal over three nights between February 2 and February 7, 1943, conceding the hard fought campaign to the Allies. Building on their success at Guadalcanal and elsewhere, the Allies continued their campaign against Japan, ultimately culminating in Japan's defeat and the end of World War II.