B1 1922
| Name | No | Yard No | Builder | Laid down | Launched | Comp | Fate |
| B1 (ex-A4) | SECN, Cartagena | 2.1917 | 2.6.1921 | 2.1922 | stricken 10.1941 | ||
| B2 | SECN, Cartagena | 8.1917 | 1.10.1921 | 6.1922 | stricken 5.1951 | ||
| B3 | SECN, Cartagena | 1.1920 | 18.3.1922 | 8.1922 | stricken 6.1940 | ||
| B4 | SECN, Cartagena | 5.1920 | 31.10.1922 | 5.1923 | stricken 7.1941 | ||
| B5 | SECN, Cartagena | 1.1921 | 4.1.1925 | 12.1925 | lost 12-16.10.1936 | ||
| B6 | SECN, Cartagena | 9.1921 | 6.6.1925 | 1.1926 | sunk 19.9.1936 |
|
Displacement standard, t |
|
|
Displacement normal, t |
556 / 740 |
|
Length, m |
62.5 pp 64.2 oa |
|
Breadth, m |
5.60 |
|
Draught, m |
3.44 |
|
No of shafts |
2 |
|
Machinery |
2 Nelseco 8-cyl diesels / 2 electric motors |
|
Power, h. p. |
1400 / 420 |
|
Max speed, kts |
16.2 / 10.5 |
|
Fuel, t |
diesel oil 81 |
|
Endurance, nm(kts) |
8000(10.5) / 125(4.5) |
|
Armament |
4 - 450 TT (2 bow, 2 stern, 8) |
|
Complement |
28 |
| Diving depth operational, m | 60 |
Project history: First combat Spanish-built submarines, built according to the law from 17.2.1915 under the licence and with assistance of
Electric Boats Company under design "Holland 105F". They were ordered 7.2.1916.
B1 in building was named A4.
Single-hulled. Rather perfect and successful ships for time, by 1936 they became outdated and had big deterioration of
hulls and machineries. Maximal diving depth under the design was 60m, to Civil war
it actually did not exceed 20-25m.
Modernizations: 1928, all: + 1 x 1 - 76/45 Vickers Mk SS
Naval service:
All boats in 1936 remained under control of Republicans. B1 and B2
since late 1937 were laid up into reserve at Cartagena because of bad technical condition.
B3 in December, 1936 was hard damaged as result of collision with Norwegian
s/s Frank, repair in Cartagena lasted till the end of war. B4 in December, 1936
was damaged by aircraft of Nationalists at Malaga, she passed to Cartagena for
repair, but 15.3.1937 was stricken from Republican fleet. At agony of Republic in the end of March, 1939 these four
submarines were foundered on shallow water:
B1 and B2 at Cartagena, B3 and B4 at
Portman near Cartagena. All were soon salvaged by Nationalists, but never
commissioned again and sold for scrap, except for B2, used till 1948 as a
TS (without diving ability), and since 1948 as battery charge plant at Ferrol.
B1 was used as target and sunk in 1949.
B5 was lost in strait of Gibraltar: she was sunk by seaplane of Nationalists 12.10.1936 or
scuttled 16.10.1936 by her commander sympathising to Nationalists. B6 19.9.1936 at
Cape Peñas was sunk by gunfire of Nationalists destroyer Velasco and armed tug
Galicia with assistance of sympathising to Francists commander of
submarine.
B6 1930
© Ivan Gogin, 2011-15