 She arrived at Ulithi on 23 March and immediately commenced supplying water to landing craft, preparing for the Okinawa campaign, merchant vessels, and various harbor craft.With no natural water supply at Ulithi, "Pasig" refilled periodically from tankers from the Philippines, or made trips to the closest natural source.On 7 May she departed for a water run to Manus, whence, redirected, she steamed northeast to Eniwetok.