HMS Acheron P-411 / S-11 / S-61

Type:
Submarine
Class:
A (Amphion)
Number in Class:
Pennant Number :
P-411
S-11
S-61

Built By:
Royal Dockyard
Chatham, England

Keel Laid Down:
August 26, 1944
Launched:
March 25, 1947
Commissioned:
April 17, 1948
Decommissioned:
N/A
Stricken:
February 1, 1972
Fate:

Sold January 25, 1972 to J. Cashmore, Newport, England and scrapped


Note: Dimensions and armament are general for class as built.
Length:
280' 6"
Beam:
22' 4"
Draft:
16' 9"
Displacement:
1,385 (Surfaced)
1,620 (Submerged)

Depth Limit:
350'
Speed:
18.5 knots (Surfaced)
8 knots (Submerged)

Range:
10,500 (Surfaced at 11 knots)
16 (Submerged at 8 knots)

Armament:
10 x 21" torpedo tubes (6 forward, 4 aft.)
Note: 2 forward and two aft tubes were external one shot tubes which were later removed.
20 torpedoes or 26 mines
1 x 4" deck gun
1 x 20mm Oerlikon
3 x .303 cal. machine guns

Crew:
61
Notes:
Surviving boats modernized between 1955-1960. Both forward and aft sections were
rebuilt, sail modified and the external torpedo tubes were removed.



Page revised Jan. 15, 2007