NAVYPEDIA

Photo

H5 1921

Ships

No	Name	Yard No	Builder	Laid down	Launched	Comm	Fate
SS28	H1 (ex-Seawolf)	99	Union Iron Wks, San Francisco	3/1911	6.5.1913	12.1913	wrecked 12.3.1920
SS29	H2 (ex-Nautilus)	100	Union Iron Wks, San Francisco	3/1911	4.6.1913	12/1913	stricken 12.1930
SS30	H3 (ex-Garfish)	59	Moran, Seattle	4/1911	3.7.1913	1.1914	stricken 12.1930
SS147	H4 (ex-АГ.17 [AG.17])		Puget Sound N Yd, Bremerton	5.1918	9.10.1918	10.1918	stricken 2.1931
SS148	H5 (ex-АГ.18 [AG.18])		Puget Sound N Yd, Bremerton	5.1918	24.9.1918	9.1918	stricken 2.1931
SS149	H6 (ex-АГ.19 [AG.19])		Puget Sound N Yd, Bremerton	5.1918	26.8.1918	9.1918	stricken 2.1931
SS150	H7 (ex-АГ.20 [AG.20])		Puget Sound N Yd, Bremerton	5.1918	17.10.1918	10.1918	stricken 2.1931
SS151	H8 (ex-АГ.27 [AG.27])		Puget Sound N Yd, Bremerton	5.1918	14.11.1918	11.1918	stricken 2.1931
SS152	H9 (ex-АГ.28 [AG.28])		Puget Sound N Yd, Bremerton	6.1918	23.11.1918	11.1918	stricken 2.1931

Technical data

Displacement standard, t
Displacement normal, t	358 / 467
Length, m	45.8
Breadth, m	4.80
Draught, m	3.80
No of shafts	2
Machinery	2 NLSE diesels / 2 electric motors
Power, h. p.	950 / 600
Max speed, kts	14 / 10.5
Fuel, t	diesel oil 34
Endurance, nm(kts)	2300(11) / 100(5)
Armament	4 - 450 TT (bow, 8)
Complement	25
Diving depth operational, m	60

Standard scale images

Graphics

Project history

This class was considered successful, apart from engine problems; H1 and H3 failed their first engine endurance runs. H4-H9 were originally ordered by the Czarist Russian government as AG17-20, 27 and 28, but they were purchased for the US Navy in 1918. This class should not be confused with the Electric Boat-built British and Chilean 'H' class.

Modernizations

None.

Naval service

No significant events.