On 1 June, "Waterman" joined Task Group (TG) 50.17, a fleet service group made up of vital support ships — particularly fleet oilers, tugs, ammunition ships, supply ships, and the like — that allowed the fast carrier task forces to remain at sea for prolonged periods of time. Those ships provided the carriers and their escorts with the vital necessities of life — food, fuel, ammunition, mail, etc. — anything the fleet needed to keep up the pressure on the Japanese.