"Yankee" then briefly resumed blockade duty off Santiago, but on the 8 June got underway for St. Nicholas Mole with dispatches. On 9 June, just before she arrived at her destination, the auxiliary cruiser stopped two merchantmen and inspected them. They turned out to be the Norwegian SS "Norse" and the British SS "Ely", so "Yankee" allowed them to proceed on their way. She completed her mission at Haiti and returned to Santiago early the following morning. At about noon on 10 June, "Yankee" set a course for Port Antonio, Jamaica, to deliver dispatches and to search for the suspected blockade runner SS "Purissima Concepcion". After delivering the dispatches at Port Antonio on 10 June. and visiting Montego Bay in search of "Purissima Concepcion", the warship returned to the Santiago area on 12 June. However, that same day, she received orders to move again, this time to Cienfuegos, about halfway up the southern coast of Cuba from Santiago, to stand guard there against "Purissima Concepcion"s expected run.