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CAPITÁN O`BRIEN submarines (1929)


Photo



Almirante Simpson 1930

Ships


Name No Yard No Builder Laid down Launched Comp Fate
Capitán O'Brien O   Vickers-Armstrong, Barrow, UK 1928 2.10.1928 6.1929 discarded 1957
Almirante Simpson S   Vickers-Armstrong, Barrow, UK 1928 15.1.1929 9.1929 discarded 1957
Capitán Thomson T   Vickers-Armstrong, Barrow, UK 1928 15.1.1929 8.1929 discarded 4.1958


Technical data


Displacement standard, t1412
Displacement normal, t

1540 / 2020

Length, m

79.3

Breadth, m

8.53

Draught, m

4.15

No of shafts

2

Machinery

2 diesels / 2 electric motors

Power, h. p.

2750 / 1300

Max speed, kts

15 / 9

Fuel, t

diesel oil 200

Endurance, nm(kts)8400(10) / 70(4)
Armament

1 x 1 - 120/45 Vickers-Armstrong E, 1 x 1 - 7.7/87, 8 - 533 TT (6 bow, 2 stern, 16)

Electronic equipmentpresumably type 118 sonar
Complement

54

Diving depth operational, m95


Standard scale images


<i>Capitán O'Brien</i> 1929
Capitán O'Brien 1929


Graphics


<i>Almirante Simpson </i>1930
Almirante Simpson 1930


Project history

Submarines were designed under Chilean order on the basis of first post-war British submarines of O class. Saddle-tank hull. Boats differed in the big sizes of fin structure on which 120mm/45 Vickers-Armstrong Mk E gun was installed in rotated semi-turret. Using of this gun on Chilean submarines was unique: similar guns have not found service on British submarines because of separate loading. All three submarines arrived to Valparaiso 5.3.1930.

Modernizations

None.

Naval service

Capitán O'Brien after write-off foundered at Talcahuano in 1959 and was salvaged and broken up only in 1988.