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FIGHTING SHIPS OF THE WORLD
UNITED KINGDOM
SUBMARINES
X1 submarine (1, 1925)


Photo



X1 1925

Ships


Name No Yard No Builder Laid down Launched Comp Fate
XI     Chatham DYd 11/1921 16.6.1923 9/1925 BU 12.1936


Technical data


Max speed, kts, kn

19.5 / 8

Displacement standard, t

2425

Displacement normal, t

2780 / 3600

Length, m

110.8

Breadth, m

9.09

Draught, m

4.80

No of shafts

2

Machinery

2 Admiralty diesels + 2 diesels from German submarine U126 / 2 electric motors

Power, h. p.

6000 + 2000 = 7000 only / 2400

Fuel, t

diesel oil 452

Armament

2 x 2 - 132/42 QF Mk I, 6 - 533 TT (bow, 12)

Electronic equipmenttype 113 sonar
Complement

110

Diving depth operational, m60


Graphics


<i>X1</i> 1925
X1 1925


Project history

Submarine had double-hulled construction at nearly full length, maximal diving depth was 110m. Fuel was stowed mostly in external riveted tanks, only 40.5t was stowed in pressure hull. 2 1200hp diesels from German submarine U126 driven battery-charging generators, these generators may also drive the motors directly achieving 1000hp each. So total surface power could be 8000hp but auxiliary diesels may give only half of their maximal power on maximal propeller shaft revolutions and 1000hp were lost.

Modernizations

None.

Naval service

Submarine was laid up in December 1933 owing to severe machinery troubles.