Table:
text: Dolfijn-class submarine
The Boats
The Boats
Ship Builder Laid_down Launched Commissioned
Dolfijn Rotterdamse Droogdok Mij 30 December 1954 20 May 1959 16 December 1960
Zeehond Rotterdamse Droogdok Mij 30 December 1954 20 February 1960 16 March 1961
Potvis-class Potvis-class Potvis-class Potvis-class Potvis-class
Potvis Wilton-Fijenoord, Schiedam 17 September 1962 12 January 1965 2 November 1965
Tonijn Wilton-Fijenoord, Schiedam 26 October 1962 14 June 1965 1965 24 February 1966

Question: The Zeehond was built by whom in a Dolfijn class submarine?