1) Fort in Norway 
Fredriksvern (also called Friderichsværn (1801), Frederiksværn (1865), Fredriksværen (1900) and abbreviated Frsværn) was an important Norwegian naval base, just south of Larvik in Vestfold. The town of Stavern has in many ways come to be because of this naval base. Fredriksvern or Stavern has probably been a harbor since ancient times. The nam...