Sketch of the Harbour of Samganooda, on the Island of Oonalaska. (Alaska)

Samganooda, is located on the island of Oonalaska in Alaska which is part of the Aleutian Islands. This chart was surveyed by Lieutenant Henry Roberts was the Masters Mate on Cook's third voyage and was given the task of compiling the surveys for the trip. This chart appeared in; "A Voyage to the Pacific Ocean... for making discoveries in the Northern Hemisphere... Performed under the direction of Captains Cook, Clerke, and Gore, in his Majesty's ships the Resolution and Discovery. In the years 1776, 1777, 1778, 1779, and 1780." The chart is oriented with north toward bottom.