The ships had left Salmon Cove on August 18, arriving in Port Stewart, just to the west of Revillagigedo Island, a few days later.
From here, Johnstone had gone to the north, circumnavigating what is named "Duke of York's Island" (in reality three islands: Wrangell, Zarembo, and Etolin Islands), as well as sighting Mitkof Island and exploring to the head of Duncan Canal.
