"Arethusa" reached the Azores on the 27th and, but for a quick run to Bermuda and back in mid-May, operated there until returning to New York on 10 June. On 28 June, she began another mid-Atlantic deployment which took her twice to Bermuda and once to the Azores before she refilled her tanks at Port Arthur, Texas for another cargo of fuel oil which she once more issued in the Azores and at Bermuda before putting in at New York on 22 December, one month and 11 days after the signing of the Armistice stopped the fighting of World War I.