NAVYPEDIA

Ships

No	Name	Yard No	Builder	Laid down	Launched	Comm	Fate
SS24	E1 (ex-Skipjack)	179	Fore River, Quincy	12/1909	27.5.1911	2.1912	stricken 10.1921
SS25	E2 (ex-Sturgeon)	180	Fore River, Quincy	12/1909	15.6.1911	2.1912	stricken 10.1921

Technical data

Displacement standard, t
Displacement normal, t	287 / 342
Length, m	41.2
Breadth, m	4.40
Draught, m	3.60
No of shafts	2
Machinery	2 NLSE diesels / 2 electric motors
Power, h. p.	700 / 600
Max speed, kts	13.5 / 11.5
Fuel, t	diesel oil 25
Endurance, nm(kts)	2100 (11) / 100 (5)
Armament	4 - 450 TT (bow, 4)
Complement	20
Diving depth operational, m	60

Standard scale images

Project history

In these submarines the growth in size was reversed; the Submarine Flotilla considered them a 'reversion of type without justification'. They were the first US submarines with diesel engines, which gave considerable trouble; they had to be re-engined in 1915. They also were the first in USN with bow planes, and first USN submarines with radios. This class showed a typical pre-1917 American concentration on high underwater speed, which continued through the 'S' class of World War One.

Modernizations

None.

Naval service

No significant events.