On 30 December, "Mansfield" joined TG 30.1 for airstrikes against Formosa and central Luzon. Afterwards, Admiral William Halsey took the 3rd Fleet, with TG 30.1, through the Bashi Strait into the South China Sea. However, no Japanese units challenged Halsey's fleet during its 3,800 mile foray along the China coast from Hong Kong to Saigon. From 10 to 20 January 1945, 3rd Fleet aircraft battered enemy facilities and merchant ships and destroyed 112 Japanese planes.