Displacement 400
(surfaced)-540 (submerged) tons, building allowed in 1909, first material
immediately ordered when building started, keel laid down after 6 months, after
6 years + 6,5 months ready for 90%, contracted to be built within 28 months, so
at least 4,5 years too late delivered. (1)
Note
1. Laid down as the USS Tuna
at the shipyard of Lake Torpedo Boat, Bridgeport, Connecticut, USA on 20
October 1909, launched on 10 January 1912 and commissioned on 1 December 1913.
Source
Marineblad 1915/1916
no. 6. The article was mainly based on a report of the Secretary of Navy dated
16 October 1915 over the year ending on 30 June 1915.
