Danish submarine Najaden launched according to the Dutch magazine Marineblad dated 1913-1914 no. 6

An item referred to the launching in July of the 6th Danish submarine named Najaden with as dimensions 38 x 3,8 x 2,3 metres. The machinery consisted of an Augsburg-Nürnberg 500 hp diesel and a 300hp electric motor. The Najaden was on short time to be completed.(1) 

Note

1. Launched at the Naval Dockyard, Copenhagen, Denmark on 9 July 1913, commissioned on 1 December 1913, part of the naval reserve since 1928 and decommissioned on 9 September 1931.