We entered it [Unimak Pass] on the afternoon of the 15th, when the wind fell, but the tide serving, we drifted through during the night. After entering Bearing Sea we had stronger winds, and after clearing the pass we were enabled to stand on our course, which carried us about sixty miles to the eastward of the Pribyloff Islands.

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Gulf (Wikipedia) A gulf is a large inlet from an ocean into a landmass, typically (though not always) with a narrower opening than a bay. The term was used traditionally for large, highly indented navigable bodies of salt water that are enclosed by the coastline. Many gulfs are major shipping areas, such as the Persian Gulf, Gulf of Mexico, Gulf of Finland, and Gulf of Aden.

Report of the International polar expedition to Point Barrow, Alaska, in response to the resolution of the [U.S.] House of representatives of December 11, 1884 (archive.org) The Secretary of War has the honor to transmit to the House of Representatives the report of the International Polar Expedition to Point Barrow, Alaska, together with the letter of the Chief Signal Officer of the Army, of this date, submitting the report to this Department, the same being furnished in response to the resolution of the House of Representatives of December 11, 1884, as follows : “Resolved, That the Secretary of War be requested to transmit to the House of Representatives, if not inconsistent with the public service, the report of the International Polar Expedition to Point Barrow, Alaska, by Lieut. P. H. Ray, U. S. Army, for the years 1881, 1882, and 1883.” ROBERT T. LINCOLN, Secretary of War.