K Class



Fleet Submarine

Holland Class Submarine
K Class Group Two

  • K Class Group Two
  • K26

The Group Two K boats, K23 to K28 were ordered in June 1918 and were intended to be an improvement on the Group One boats. K23 to K25, K27 and K28 were cancelled on 26th November 1918, the frames of K24, K25 and K28 were ordered to be taken to HM Dockyard Chatham for completion but this was also cancelled finally.

The modification of the Group Two boats consisted of a new high-pressure system for blowing the forward external main ballast tanks. To improve seaworthiness a free-flooding structure was added forward which gave the appearance of a bulbous bow. One gun was removed and the other repositioned on the superstructure, deck torpedoes removed to improve the stability and the funnels were lengthened to reduce the amount of water being washed down into the boilers.

1 Built

Submarine Builder Built
K26 Vickers,
Barrow-in-Furness
H.M. Dockyard, Chatham
1908 - 1910

Completed 28th June 1923.


There were a total of six boats projected for this Group (an improvement on the Group One),
which were ordered in June 1918. K23, K25, K27 and K28 were cancelled on 26th Novemfber 1918.  The frames of K24, K25 and K28 were to be taken to H.M. Dockyard, Chatham for completion but this was also cancelled.

Technical Information

Displacement (tons): 2,140 sf
2,770 sm
Length (ft): 351.5 (loa)
Breadth (ft) 28
Draught/Height (ft): 16.84
Machinery: 10,500 hp geared turbines
800 hp diesel booster for diving or surfacing.
1,400 hp electric motor. Twin screws.
Speed (kts): 23.5 kts sf
9 kts sm
Oil Supply (tons): na
Armament: 6 x 21 inch tubes, 4 bow, 4 x 18 inch tubes, beam. 3 x 4 inch guns.
Range: 960 miles at full speed.
12,500 miles at 10 kts sf.
30 miles at 4 kts sm.
Complement: 65 officers and ratings
sm = submerged, sf = surfaced, oa = overall, hp = horsepower, na = not available.

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H.M. Submarine K26

Type: K Class Group Two
Pennant No.: K.26  
Laid Down: June 1918 H.M. Dockyard, Portsmouth.
Completed by H.M. Dockyard, Chatham
Commissioned: 28th June 1923 Not known at present.
Commander: Not known at present Not known at present.
Complement: 58 5 Officers and 53 Ratings.
Service Career: not known at present Not known at present.
   
Fate: Sold March 1931

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