1. TON Class Association

2. Coastal Minesweeper Terrier of the Seas

3. CMS Facts and Figures 152 ft Long, 28 ft Beam, Draught 8 ft
Displacement 425 tons
Two engines
15 Knots
Range 2300 miles at 13 knots
4-5 Officers, 3 Senior Rates, 20+ Ratings
Mine Sweeper & Mine Hunter versions

4. Double-diagonal mahogany hulls, on aluminium frame
Teak/Oroko decks
Aluminium upperworks
Twin screws, twin rudders
Mirrlees 2500 hp or Deltic 3000 hp engines
1 x 40mm Bofors cannon
1 x twin 20 mm Oerlikon cannon *
Wire, Magnetic & Acoustic sweeps

5. Design conceived in 1949 to counter improved enemy magnetic and acoustic mines
Originally to be called after Insects, then re-named after English villages ending in “…ton”
117 ships built for Royal Navy – largest class
Used by six other navies
Design principles carried forward to current MCMVs

6. – Canada & Argentina came close
Designed for coastal waters but served in every ocean except Arctic and Antarctic
– Canada & Argentina came close
Saw action at Suez (twice), Cyprus, Borneo, Persian Gulf, Northern Ireland
Used for Mine Sweeping, Mine Hunting,
Fishery Protection, Gun Boats, Piracy Patrols,
Counter-terrorist gun-running, Training, RNR

7. German Minelayer with buoyant mines 1938

8. Royal Navy laying buoyant mines 1940’s

9. German Magnetic Mine 1940

10. BANG !

11. Oropesa Sweep

12. Sweepdeck – Tin Gear

13. Launch Otter

14. Oropesa Starboard

15. Acoustic Sweeping

16. 4 inch Buoyant Cable 3000 amps
Float
electrodes
Otter
4 inch Buoyant Cable amps
LL Magnetic Sweep

17. Magnetic Sweeping

18. Influence Sweeping
Acoustic
Magnetic

19. HMS Fenton - M1135

20. Built by Camper & Nicholson - 5th of 8 vessels
Launched 10 March 1955
Commissioned for 108 MSS August 1955
10 x Cyprus anti-terrorist & gun running patrols
January 1956 – October 1958
Operation Musketeer Suez Canal November 1956
October 1958 – Running Reserve – Malta
October 1959 Towed to Aden – Strategic Reserve
(not arked until November 1961)
December 1964 Returned to UK under own power
May 1965 Refit suspended
July 1968 Sold for breakup

21. FENTON as Half Leader 108 MSS

22. CMS s arked in Reserve Fleet

23. Fishery Protection

24. CUXTON & Polish Factory Ship on limit of Territorial Waters

25. MFVs under arrest

26. Gemini Salvage

27. Refuelling at Sea

28. Pirate Hunting

29. Training – ship handling
WOODBRIDGE HAVEN & Inshore Flotilla

30. 104 [Blackfoot] Squadron

31. Deltic Engine

33. Hearts & Minds Patrols

34. Mine Warfare in Iraq 2004