The Guía Narrows (Spanish ''Angostura Guías'') are located between

Chile Chile, officially the Republic of Chile, is a country in western South America. It is the southernmost country in the world and the closest to Antarctica, stretching along a narrow strip of land between the Andes, Andes Mountains and the Paci ...

Hanover Hanover ( ; ; ) is the capital and largest city of the States of Germany, German state of Lower Saxony. Its population of 535,932 (2021) makes it the List of cities in Germany by population, 13th-largest city in Germany as well as the fourth-l ...

and

Chatham Islands The Chatham Islands ( ; Moriori language, Moriori: , 'Misty Sun'; ) are an archipelago in the Pacific Ocean about east of New Zealand's South Island, administered as part of New Zealand, and consisting of about 10 islands within an approxima ...

. Guia Narrows connects

Sarmiento Sarmiento may refer to: Places Argentina *Sarmiento Department, San Juan, a subdivision of the San Juan Province * Sarmiento Department, Santiago del Estero, a subdivision of the Santiago del Estero Province * Sarmiento Department, Chubut, a subdi ...

and Inocentes Channels. The narrows are 6 miles long and are 1 to 1.5 miles wide, except at the north end, between Porpoise Point, low and sharp, on the west side, and Guard Island on the east, where the breadth is about 400 yards, but generally, there is no danger; the shores being steep-to on either side. Sometimes, the tide sweeps strongly around the point; therefore, it would be advisable to keep closer to Guard Island while passing through.

References

United States Hydrographic Office The United States Hydrographic Office (USHO) prepared and published maps, charts, and nautical books required in navigation. The office was established by an act of 21 June 1866 as part of the Bureau of Navigation, Department of the Navy. It wa ...

South America Pilot
(1916) p. 410 Straits of Chile Bodies of water of Magallanes Region {{MagallanesyAntártica-geo-stub