Type C
I.16
 

Class I.16 Variant C.1

Boats in class  5 Units - I.16   I.22   I.18   I.24   I.20
Normal displacement surfaced  2.554t
Normal displacement submerged  2.561t
Machinery  2 x Diesel
2 x electric
Maximum power Surfaced/Submerged  12.400hp/2.000hp
Speed Surfaced/Submerged  23,6 knots/8 knots
Armament  1 x 140mm L/50 Gun
4 x 25mm AA
Torpedeo Tubes  8 x 533mm/20 Torpedoes
Length  109,3m
Beam  9,1m
Height  5,3m
Complement  101
Year of construction  1937-1941
Fate  
Builder  I.16   I.22 - Kawasaki Kobe 1937-1941
I.18   I.24 - Sesabo Dockyard 1937-1941
I.20 - Mitsubishi Kobe 1937-1941

Class I.46 Variant C.2

Boats in class  2 Units - I.46   I.48  
Normal displacement surfaced  2.557t
Normal displacement submerged  3.564t
Machinery  2 x Diesel
2 x electric
Maximum power Surfaced/Submerged  12.400hp/2.000hp
Speed Surfaced/Submerged  23,6 knots/8 knots
Armament  1 x 140mm L/50 Gun
4 x 25mm AA
Torpedeo Tubes  8 x 533mm/20 Torpedoes
Length  109,3m
Beam  9,1m
Height  5,3m
Complement  101
Year of construction  1942-1944
Fate  
Builder I.46   I.48 - Sasebo Dockyard 1942-1944

Class I.52 Variant C.3

Boats in class  2 Units - I.52   I.55  
Normal displacement surfaced  2.564t
Normal displacement submerged  3.644t
Machinery  2 x Diesel
2 x electric
Maximum power Surfaced/Submerged  4.700hp/1.200hp
Speed Surfaced/Submerged  17,7 knots/6,5 knots
Armament  2 x 140mm L/50 Gun
4 x 25mm AA
Torpedeo Tubes  6 x 533mm/19 Torpedoes
Length  108,7m
Beam  9,3m
Height  5,1m
Complement  101
Year of construction  1942-1944
Fate  
Builder I.52   I.55 - Kure Dockyard