On 18 December, the ships of TF 38 unexpectedly found themselves in a fight for their lives when Typhoon Cobra overtook the force–seven fleet and six light carriers, eight battleships, 15 cruisers, and about 50 destroyers–during their attempt to refuel at sea. At the time the ships were operating about 300 mi (480 km) east of Luzon in the Philippine Sea.[11] The carriers had just completed three days of heavy raids against Japanese airfields, suppressing enemy aircraft during the American amphibious operations against Mindoro in the Philippines. The task force rendezvoused with Captain Jasper T. Acuff and his fueling group 17 December with the intention of refueling all ships in the task force and replacing lost aircraft.[12] Although the sea had been growing rougher all day, the nearby cyclonic disturbance gave relatively little warning of its approach.