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FIGHTING SHIPS OF THE WORLD
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SUBMARINES
"X" midget submarines (X3) (31, 1942 - 1945)


Photo



X25 1944

Ships


Name Builder Dates of completion Losses Transfers Discarding

X3 - 10

X20 - 25

XT1 - 6

XE1 - 9

XE11 - 12

Varley Marine, Portsmouth / Portsmouth DYd: X3, 4

Vickers-Armstrong, Barrow: X5 - 10, X20 - 25, XT1 - 6

Broadbent Markham, Chesterfield; Marshall, Gainsborough: XE1 - 9, XE11 - 12

1942: X3 - 5

1943: X6 - 10, X22

1944: X20, 21, X23 - 25, XT1 - 6, XE1 - 9, XE11, 12

X5 (22.9.1943), X6 (22.9.1943), X7 (22.9.1943), X8 (17.9.1943), X9 (16.9.1943), X10 (3.10.1944), X22 (7.2.1944), XE11 (6.3.1945)

None

1945: X3, 4, 20, 21, 23 - 25, XT1 - 6, XE1 - 6

1952: XE7 - 9, 12



Technical data


Max speed, kts, kn

6 - 6.6 / 5 - 6

Displacement standard, t---
Displacement normal, t

X: 26.9 / 29.7

ХТ: 26.7 / 29.8

ХЕ: 30.3 / 33.6

Length, m

Х, ХТ: 15.7

ХЕ: 16.2

Breadth, m

1.77 less side charges

Draught, m

Х: 2.25 deep load

ХТ: 2.11 deep load

ХЕ: 2.17 deep load

No of shafts

1

Machinery

1 Gardner diesel / 1 electric motor

Power, h. p.

42 / 30

Fuel, t

Х: diesel oil 11

ХТ: diesel oil 5

ХЕ: diesel oil 10

Endurance, nm(kts)

X: 1100(4) / 165(2)

XE: 500(4) / 80(2)

XT: 1860(4) / 80(2)

Armament

Х, ХЕ: 2x 2t dropped side charges

Electronic equipmenttype 151 sonar
Complement4
Diving depth operational, m95


Standard scale images


<i>X7</i> 1943
X7 1943


Graphics


<i>X25</i> 1944
X25 1944
<i>XE</i>-type 1946
XE-type 1946


Project history

Midget submarines intended for actions against the ships at the bases. War department became the initiator of creation of that boats. Under its order in 1939 designing of midgets for riverine service has begun. Soon the order has transferred to Admiralty needed similar craft for operations against enemy large ships. Armament of midget submarines was consisted of 2 dropped explosive charge about 2000kgs of explosives each. After clock mechanism setting for certain time submarine should dump them under the bottom of enemy ship and escape on safe distance. Midgets were delivered to their operation area under tow of large submarines of "Т" or "S" classes. Towing was effected at speed nearby 10.5kts. In comparison with prototypes, serial boats had increased from 60 to 95m operational diving depth. On the basis of Х5 class for actions on Pacific Ocean a little increased boats of "ХЕ" class, and also training "XT" class boats were built.

Modernizations

None.

Naval service

Building of XE10 was cancelled.

1946