The man made canal, in Swedish Sotekanalen, has been dug and blasted through the rock as a relief work for unemployed stonemason workers. The idea to build a canal came up already in the late 1800 to create a safer passage over the dangerous waters in the Sotefjord. The decision was made 1913 but the work didn’t start until 1931. It was inaugurated in 1935 by the Swedish Crown Prince Gustav Adolf. This made the peninsula Ramsvikslandet to an island but it’s now connected to the mainland with a swing bridge.
The canal is 4800 meters long, 4,5 meters deep and 15 meters wide. Today it’s not used for commercial traffic but each year over 50 000 recreation boats passes this beautiful waterway.
Since 1889 it has been guiding ships towards the Kosterfjord sea-lane and Resö. Originally the light came from the second floor windows but in 1917 it was replaced with gas driven AGA lighthouse in front of the building. The first floor was the living quarters for the lighthouse keeper with family. Since the the new AGA lighthouse was automatic there was no personnel after 1917. The house was sold to a private owner in 1950. Easy to manage garden, I guess, but probably needs to be painted regularly due to the harsh and salty west winds.
The fully automatic AGA lighthouse was invented by the Swedish inventor Gustaf Dahlén. He was awarded Nobel prize in physics for his work with lighthouse technology. The light was kept burning with the help of carbine gas. To save gas it was started and stopped with the help of a sun-valve also invented by Gustaf Dahlén.