L1 type 2nd class submarines




Displacement893t surface, 1195t submerged
Length67.1m pp, 70.6m oa
Width7.2m
Draught3.9m
Machinery2-shaft diesel/electric motor, 2400bhp surface, 1600shp submerged
Fueloil 75t
Speed17kt surface, 8kt submerged
Range5500nm by 10kt surface, 80nm by 4kt submerged
Armament6-45cm TT, 1-8cm/28cal AA gun, 1-7.7mm MG
Complement48



Name Plan Builder Laid down Launch Complete
Ro-51
(SS-25)
FY1917Mitsubishi, Kobe1918. 8.101919.10.101920. 6.30SS2
(SS-25)
1924.11. 1 renamed(Ro-51)
1940. 4. 1 disc
Ro-52
(SS-26)
FY1917Mitsubishi, Kobe1918. 8.101920. 3. 91920.11.30SS2
(SS-26)
1924.11. 1 renamed(Ro-52)
1932. 4. 1 disc



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