Sarmiento Channel is a principal Patagonia channel, which extends in a north-south direction. It begins with the Guia Narrows (Angostura Guía) and is located in Magallanes y Antártica Chilena Region. The kawésqar people sailed its waters from around 6,000 years ago until end of 20th century, as they inhabited its coasts.
The channel is named after Pedro Sarmiento de Gamboa, who was a Spanish explorer who navigated the region's waterways between 1579 and 1580.
This elongated water passage begins immediately south of the Guía Narrows at Smyth Channel. During the first 65 nautical miles, it runs in a general south-southeasterly direction, and is flanked by Chile mainland on the east and the islands Esperanza, Vancouver and Piazzi on the west. Then it turns abruptly eastward for about 4 nmi, where the channel's name changes to Farquhar Pass. It then resumes its general SSE course, merging with Collingwood Strait for approximately 8 nmi and finishing at Victoria Pass, a 5 nmi long channel that joints it with Smyth Channel.and terminates at the southern tip of Victoria Pass at , where it joins to
The islands that border the channel are mountainous with summits that reach 457 m. There is a chain of mountains in the middle of Esperanza Island with elevations between 300 and 1,067 m. To the east of Collingwood Strait, rises the Cordillera Sarmiento, which is a heavily ice- and snow-covered mountain range with majestic glaciers descending to the sea. There are several bays on its coast, which can be used for anchorage of large ships. Along the coast line, some shipwrecks can be observed.
- This article draws heavily on the corresponding article in the Spanish-language Wikipedia, accessed October 12, 2007.
- Instituto Hidrográfico de la Armada de Chile (1974). Atlas Hidrográfico de Chile (Primera edición ed.).
- Instituto Hidrográfico de la Armada de Chile (1982). Derrotero de la Costa de Chile Volumen III (5ª edición ed.).
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