Sentinel Island Light
Sentinel Island Light is a lighthouse in Alaska, located near Lynn Canal at the northern entrance to the Favorite Channel, between the mainland and Lincoln and Shelter Islands. The lighthouse sits on Sentinel Island and guards the area around 6.6 acres of land. The site’s first lighthouse was built in 1902, and the present 51-foot square, Art Deco-style tower was completed in the 1930s to replace the wooden building, with the current light first shining in 1935. The 1930s tower cost $35,310 to build.
The light has a focal height of 86 feet, and its white light flashes every 10 seconds. It can be seen from up to 14 nautical miles, but its beam is obscured between bearings of 152° and 296°. The station is now powered by solar energy and was automated in 1966.
Today, the Sentinel Island Light is operated by the Gastineau Channel Historical Society. It was listed on the National Register of Historic Places on December 2, 2002, as part of the Sentinel Island Light Station historic district, which includes several contributing buildings, structures, and sites.
This page was last edited on 3 February 2026, at 05:18 (CET).