 Next, the oiler participated in the conquest of the Marianas, fueling ships fighting for that strategic island group from 15 to 27 June, from 2 to 25 July, and from 3 to 12 August, before turning to the western Carolines.At 0434 on 10 September, while maneuvering in a hazy half-light, "Schuylkill"'s bow struck her sister ship on her quarter.