C1 1928
| Name | No | Yard No | Builder | Laid down | Launched | Comp | Fate |
| C1, 9.1930- C1 Isaac Peral | SECN, Cartagena | 7.1923 | 30.3.1927 | 7.1928 | stricken 1.1950 | ||
| C2 | SECN, Cartagena | 9.1923 | 4.3.1928 | 7.1928 | stricken 6.1951 | ||
| C3 | SECN, Cartagena | 5.1924 | 20.2.1929 | 5.1929 | sunk 12.12.1936 | ||
| C4 | SECN, Cartagena | 5.1924 | 6.7.1929 | 9.1929 | collision 27.6.1946 | ||
| C5 | SECN, Cartagena | 10.1924 | 28.10.1929 | 4.1930 | lost 30-31.12.1936 | ||
| C6 | SECN, Cartagena | 2.1925 | 26.12.1929 | 9.1930 | scuttled 20.10.1937 |
|
Displacement standard, t |
|
|
Displacement normal, t |
915 / 1143 |
|
Length, m |
75.3 |
|
Breadth, m |
6.33 |
|
Draught, m |
4.12 |
|
No of shafts |
2 |
|
Machinery |
2 Vickers diesels / 2 electric motors |
|
Power, h. p. |
2000 / 750 |
|
Max speed, kts |
16.5 / 8.5 |
|
Fuel, t |
diesel oil 150 |
|
Endurance, nm(kts) |
6800(10) / 150(4.5) |
|
Armament |
C1, 2, 5, 6: 1 x 1 - 76/45 Vickers Mk SS, 6 - 533 TT (4 bow, 2 stern, 10) C3, 4: 1 x 1 - 76/50 Vickers Mk TR, 6 - 533 TT (4 bow, 2 stern, 10) |
|
Complement |
40 |
| Diving depth operational, m | 90 |
Project history: These submarines were built according to the law from 11.1.1922, ordered 13.10.1922. The design was developed in Spain and in essence represented increased variant of B class boats. New boats differed from latter in considerably increased dimensions but kept the same on capacity batteries, that seriously limited underwater speed and endurance. Building was conducted with assistance of Vickers. Single-hulled. Maximal diving depth was 90m, actually in Civil war it did not exceed 60m.
Modernizations: 1938, C4: + 2 x 1 - 13.2/76.
Naval service: C1 Isaac Peral was sunk by aircraft of Nationalists at Barcelona 9.10.1938, she was salvaged 15.11.1938 and towed to Barcelona for repair, 26.1.1939 captured there by troops of Nationalists. She was never commissioned again and used as a source of spare parts for survived sister-ships. C2 during pro-Franco mutiny in Cartagena 5.3.1939 was captured by Nationalists and 7.3.1939 withdrawn by them to Palma (Mallorca) where she was commissioned by National fleet. C3 was sunk at Malaga 12.12.1936 by torpedoes from German submarine U34. C4 during escape of Republican fleet from Cartagena 5.3.1939 left to Bizerte where two days later was interned and transferred to Nationalists 31.3.1939. C4 was lost at Cartagena 27.6.1946 as a result of collision with destroyer Lepanto during exercises. C5 in the late 1936 was lost by unknown cause off Bilbao as result of accident or was scuttled by her commander. C6 was strongly damaged by close air bombs hits at Gijon 18.10.1937 and two days later scuttled near this port. In 1948 she was raised and BU.
C2 1928
© Ivan Gogin, 2011-15