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XT 4 (Excelsior)

Built By: Vickers (Barrow)
Build Group: XT

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Unofficially named Excelsior.

Less elaborately equipped as previous boats as they were intended for training.


Official
XT Specification
Length overall  51 ft 7 inch
Beam  8 ft 6 inch (with charges)
  5 ft 9 1/2 inch (without charges)
Displacement  Without Charges: 27 tons (surface)
  Without Charges: 29 1/2 tons (submerged)
Diving Depth  300 ft
Speed  With Charges: 6.5 knots (surface)
  With Charges:5 knots (submerged)
No. of shafts  1
Armament  2 x 2-ton side charges
  Limpet mines
Endurance  Surface: 1320 miles at 4 knots (with charges)
  Surface: 1860 miles at 4 knots (without charges)
  Submerged: 80 miles at 2 knots (with charges)
Complement   4
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Featured Badge

X 9 (Pluto)

Class: 1942 - 1946: X Class
Built By: Markham and Co (Derbyshire)
Build Group: X
Fate:
16 September 1943 - Lost on passage to Norway to attack Scharnhorst
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Above Us The Waves
Set during the Second World War, Above Us The Waves [1955] tells the dramatic tale of British attempts to sink a German warship, the "Tirpitz", using midget submarines. This 1950s film stars John Mills, John Gregson and Donald Sinden.
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