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100 Years of Barrow-Built RN Submarines
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00068_Text_68.txt
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2001-04-24
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MAIN PARTICULARS U Class (Group 1) U Class (Group 2) V Class
Length overall 190 ft 7 in 195ft 6 in 203 ft 5 in
Beam 15 ft 9 in 15 ft 9 in 15ft 9 in
Depth 15 ft 9 in 15 ft 10 in 15 ft 9 in
Displacement,
surface 630 tons 648 tons 660 tons
submerged 730 tons 735 tons 740 tons
Diving depth 200 feet 200 feet 300 feet
No. of shafts 2 2 2
Speed, surface:
design 11.5 knots 11.5 knots 12.5 knots
Speed, submerged:
design 9 knots 9 knots 9 knots
Endurance, surface:
design 4050 miles at 10 knots 4050 miles at 10 knots 4700 miles at 10 knots
Endurance, submerged:
design 23 miles at 8 knots 23 miles at 8 knots 30 miles at 9 knots
170 miles at 2.5 knots 170 miles at 2.5 knots
Armament (i) 4 21-inch bow tubes 4 21-inch bow tubes 4 21-inch bow tubes
(8 torpedoes carried) (8 torpedoes carried) (8 torpedoes carried)
(ii) 1 3-inch gun 1 3-inch gun 1 3-inch gun
3 0.303-inch machine-guns 3 0.303-inch machine-guns 3 0.303-inch machine-guns
Complement:
design 33 33 37
(i) The first seven U Class submarines had two additional external bow tubes installed and carried 10 torpedoes.
(ii) Undine and Unity, which were not fitted with the 3-inch gun, had 27-man complements.