Fredriksvern

thumb|300 px|Stavern Church at Fredriksvern Fredriksvern (also called Friderichsværn (1801), Frederiksværn (1865), Fredriksværen (1900) and abbreviated Frsværn) was an important Norwegian naval base, just south of Larvik in Vestfold. It is named after Fredrik V Denmark-Norway. The town of Stavern has in many ways come to be because of this naval base.

==History== The military activities in the harbor of Stavern began with building of Staverns Fortress, part of a major construction of Norwegian Fortresses which took place from 1675 to 1679 under Christian IV. Stavern has probably been a harbor since ancient times. The name is found in written sources the 11th century and in the 12th century it is referred to as a good fishing harbor. Citadellet Fortress was built in the 1680s by count Ulrik Frederik Gyldenløve and had an important role during the last Nordic war from 1709 to 1720.