Orust (Swedish pronunciation: [ˈûːrɵst]) is an island in Bohuslän, western Sweden, and Sweden's third largest island. In 2014 Statistics Sweden declared it to instead be the fourth largest island, under a definition which adds artificial canals to the possible bodies of water surrounding an island. It has been noted that under this definition, all of Götaland would be the country's largest island, rendering Orust instead the fifth largest. The largest town on Orust is Henån, the municipal capital, where approximately 1,800 inhabitants live.
https://en.wikipedia.org/wiki/Orust