Following a three-day stop at Mios Woendi to rearm with torpedoes and perform minor upkeep, "Barbero" embarked on the second portion of the patrol. This longer phase lasted from 18 November 1944 to 2 January 1945 and was conducted in the South China Sea northeast of Borneo. On 24 December in an attack on an escorted four-ship convoy, a 7,500-ton gasoline tanker was sunk and a second tanker grossing about 5,000 tons was damaged. On Christmas Day, the submarine claimed her gift from the Japanese in the form of a 4,000-ton cargo ship that she sank. On 27 December, while she attempted the perilous repassage of Lombok Strait, fragments from an aerial bomb that narrowly missed "Barbero" close aboard aft damaged her port reduction gear. The damage forced her to cover the distance remaining to Fremantle on a single screw, and put her out of action for the remainder of the war. In 68 days away from Fremantle, Barbero returned having sunk four ships totalling 21,700 tons and claiming damage to a fifth of 5,000 tons.