Departing Norfolk 30 June 1944 "Culebra Island" reached Milne Bay, New Guinea, 16 August. She joined Floating Repair Unit 1 of the 7th Fleet at Alexishafen and remained there on repair duty until arriving at Hollandia 7 October. Here she prepared ships for the Leyte operation until 25 December when she departed for San Pedro Bay, towing a drydock and escorting a tug convoy. From 6 January to 21 February 1945 she repaired and tended ships in San Pedro Bay, then sailed to Mindoro to ready LSMs for the forthcoming invasions in the southern Philippines. On 14 April she sailed for Morotai to serve ships bound for the Borneo operation and repaired those damaged there until 24 July when she returned to Leyte.