Torpedo Sight Corrector

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Torpedo Sight Corrector[1]

A Torpedo Sight Corrector was a British apparatus suggested by Lieutenant-Commander William F. Wake-Walker to demonstrate the effect of director errors for men using the Torpedo Attack Trainer.[2]

Design and Use

The device combined an adapted torpedo director whose various bars could be locked down with a target ship. It would be used after a trial run on the torpedo attack trainer and illustrate, in debrief manner, how the sailor had performed.

A target ship image of appropriate scale for the range in the training scenario at which the sailor had fired, and would be positioned in a suitable inclination to the user. The sight bar is aligned on the target and locked down and the enemy bar set for enemy speed and heading. The torpedo bar would then be locked down and the sight bar unlocked so the enemy bar could then be adjusted to the actual speed and heading of the enemy in the training scenario just undertaken. This causes the sight bar to move, and a spot of light traces the actual place in the enemy line through which the torpedo would have passed.[3]


By mid 1919, 110 of these instruments were under manufacture, and some had been received and supplied to ships and bases. The intended allocation (1 each unless otherwise noted) was to be:[4]

Torpedo Schools
Vernon (2) Defiance Actæon
Destroyer depot ships and bases
Dido (2) Dover (2) Port Edgar (2) Lyness (2)
Woolwich Diligence Apollo Blenheim
Blake Greenwich Hecla Sandhurst
Senior Officers of Light Cruiser Squadrons
Caledon Carysfort Cardiff Birmingham
Calliope Curacoa Chatham Lowestoft
Light Cruisers and Destroyer Leaders
Castor Champion
Lord Nelson Agamemnon
Royal Sovereign Marlborough Canada Dreadnought
Royal Oak Emperor of India Agincourt Ramillies
Ramillies Neptune Resolution Colossus
Revenge King George V Hercules Queen Elizabeth
Ajax St. Vincent Warspite Centurion
Barham Erin Malaya Orion
Collingwood Valiant Monarch Superb
Iron Duke Conqueror Bellerophon Benbow
Thunderer Temeraire
Australia Indomitable Hood Howe
Lion New Zealand Tiger Courageous
Princess Royal Renown Inflexible Glorious
Raleigh class
Raleigh Effingham Hawkins Frobisher
Torpedo carrying aeroplane ship
Furious Eagle Argus Vindictive
Submarine depots and bases
Titania Dolphin Adamant Forth
Lucia Ambrose Bonaventure Thames
Fearless Maidstone Vulcan Ithuriel
Platypus Alecto

Modifications for Submarine Depot ships[5]
This permits periscope angle, track angle and a speed of enemy as low as 5 knots.[6]

Stores to accompany each T.S.C.[7]
Item Patt. # Quantity
Battery box
Note: normally, the 2630 accommodated 8 cells. In this case, packing material should be used to fill the void of 2 missing cells.
2630 1
Receptacle (for 2630?) 2631 1
Battery cell 3361 6
Push 1918 1
Cable 726 12 feet
Lamp 1661 2
Connection 3362 5

See Also


  1. Handbook of Torpedo Control, 1916. Plate 41.
  2. Annual Report of the Torpedo School, 1916. p. 34. (A.L. G. 6788/16).
  3. Annual Report of the Torpedo School, 1916. p. 34.
  4. Annual Report of the Torpedo School, 1918. pp. 228-229.
  5. Annual Report of the Torpedo School, 1918. Plate 47.
  6. Annual Report of the Torpedo School, 1918. p. 229.
  7. Annual Report of the Torpedo School, 1918. p. 229.


  • Admiralty, Gunnery Branch (1917). Handbook of Torpedo Control, 1916. C.B. 302. Copy No. 141 at The National Archives. ADM 186/381.
  • H.M.S. Vernon. Annual Report of the Torpedo School, 1917. Originally C.B. 1474. Copy 7 at The National Archives. ADM 189/37.
  • H.M.S. Vernon. Annual Report of the Torpedo School, 1918. C.B. 1527. Copy 20 at The National Archives. ADM 189/38.