In 1750 King Fredrik V commissioned the construction of Fredriksvern Verft, which would be Norways premier naval base and largest naval port.
"Dry docks" (Galleiskurene) were built 1766–67. A total of 10 dry docks were built, of which five remain. By the beach you will find a large rock building. This is known locally as "The Powder House" (Krutthuset), and was built 1774–79 and used as a store for the Norwegian / Danish skerry fleet which was then based at nearby Fredriksvern.
This setting became the basis of Jonas Lie famous novel.