Upholder Class

Hunter/Killer Submarine

  • Upholder Class Submarine
  • Unicorn
  • Unseen
  • Upholder
  • Ursula
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This Class was designed to replace the Oberon class SSK's, during the 1980's, up to 18 were planned. A scaled down version of the Trafalgar SSN's, later batches were planned with increased hull size and new sonars. However in 1993 defense cuts led to the class being decommissioned before they had even been in full service for a year.

There are two decks forward and a single deck machinery space aft. The hull is coated with tiles to cut down the sonar and acoustic signature.

Increased automation of the systems allows the crew numbers to be reduced to half that of similar sized post war submarines.

There were only four boats built and put into service.

These have now been sold to Canada. Lets hope they turn out to be as successful as was thought.

4 Built

Unicorn
Unseen
Ursula

Cammell Laird, Birkenhead.
1990 - 1993
1987 - 1991
1987 - 1992
Upholder

Vickers (VSEL), Barrow-in-Furness.
1986-1990

 

Technical Information

Displacement:
1850 sf
2,400 sm

Length (ft):
70.3 oa

Breadth (ft):
7.2

Draught/Height (ft):
7.6

Machinery:
Two Paxman -Valenta 16 RPA diesel generators. 4070 bhp.
Two GEC 5000 kw. alternators, one shaft.

Speed (kts):
12 sf
20+ sm

Oil Supply (tons):
na

Armament:
6 x 21" TT, 18 torpedoes.
Mk24, Tigerfish, Spearfish.
Missiles: Sub Harpoon fired from TT.

Range:
Surface range 10,000 nm at 12kts.

Electronics:
Radar: Type 1007.
Sonar: Type 2040 bow, Type 2007 flank,Type 2019 intercept,
Type 2026 towed array.

Complement:
7 Officers 37 Others.