George Vancouver commanded one of the most detailed late-eighteenth-century surveys of the Pacific coast of North America, building on experience gained during James Cook’s second and third voyages.
Vancouver sailed in Discovery in 1791 with orders that combined diplomacy, territorial questions, and hydrographic surveying.
The expedition charted large portions of the coast from California northward through the Pacific Northwest and into Alaska.
Small boats did much of the close coastal work because Discovery and the expedition’s other vessels could not safely enter every narrow channel. Survey crews measured bearings, depths, anchorages, and shoreline geometry.
The expedition demonstrated that Vancouver Island was separated from the mainland and charted complex waters including Puget Sound and the Strait of Georgia.
Vancouver also negotiated with Spanish officer Juan Francisco de la Bodega y Quadra at Nootka Sound as Britain and Spain attempted to resolve competing territorial claims.
The charts were highly influential, but European place names did not erase Indigenous geographies already used by Coast Salish, Nuu-chah-nulth, Tlingit, and many other peoples.
Vancouver spent repeated periods in Hawai‘i and cultivated a relationship with Kamehameha I. British and Hawaiian political interests intersected with the expedition’s transport and resupply needs.
He returned to Britain in poor health and completed much of the massive voyage publication before dying in 1798.
For TransitSatellite, survey routes should distinguish the movement of the main ships from boat-based reconnaissance where surviving charts and journals make that possible.