Ton class minesweeper

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Ton class minesweeper
General Characteristics
Displacement:	440 tons
Length:	153 ft
Beam:	28.9 ft
Draught:	8.2 ft
Propulsion:	2 x Paxman Deltic 18A-7A diesel engines @ 3,000 bhp
Range:	2500 nm at 12 knots
Speed:	Cruise 13 knots on one engine. Max 16 knots on both
Complement:	32 men
Armament:	1 x Bofors 40mm gun

The Ton class were coastal minesweepers built for the Royal Navy and South African Navy in the 1950s. They were intended to meet the threat of seabed mines laid in shallow coastal waters, rivers, ports and harbours, a task for which the existing ocean-going minesweepers of the Algerine class were not suited.

The class numbered 119 vessels. They were diesel powered vessels of 440 tons displacement fully laden, constructed of wood and other non-ferromagnetic materials. Their small displacement and shallow draft gave them some protection against pressure and contact mines, and allowed them to navigate in shallow inshore waters. Armament was one 40 mm Bofors gun. Sweeping equipment was provided for moored mines and magnetic mines. Thornycroft & Co of Southampton was the lead shipyard for the class.

It was originally planned to name the ships after insects, with names like Red Ant, Green Cockchafer and so on, but this plan was abandoned and the Royal Navy ships of the class were given names of British towns and villages ending in "-ton", hence the name of the class.

With the rundown of the Royal Navy fleet in the 1960s many were sent to become base ships for the Royal Naval Reserve allowing reserve crews to get to sea for short periods without a lot of effort to organise a crew of significant size. Some of these had their names changed to reflect the RNR Division they were attached to.

The RNR vessels lasted until the introduction of the River class minesweepers in 1984. The remainder of the RN ships paid off in the 1990s.

[edit] Ships

Royal Navy:

Alcaston, launched 5 January 1953; sold to Australia in 1961 and renamed Snipe; broken up in 1985.
Aldington, launched 15 September 1955; sold to Ghana in 1964 and renamed Ejura; broken up in 1979.
Alfriston, launched 29 April 1953; broken up in 1988.
Alverton, launched 18 November 1953; sold to Ireland in 1971 and renamed 'Banba
Amerton, launched 16 March 1953; broken up in 1971.
Appleton, launched 4 September 1953; broken up in 1972.
Ashton (ex-Cheriton), launched 5 September 1956; broken up in 1977.
Badminton, launched 14 October 1954; broken up in 1970.
Beachampton, launched 29 June 1953; sold in 1985.
Belton, launched 3 October 1955; broken up in 1974.
Bevington, launched 17 March 1953; sold to Argentina in 1968 and renamed Tierra del Fuego.
Bickington, launched 14 May 1952; broken up in 1988.
Bildeston, launched 9 June 1952; broken up in 1988.
Blaxton, launched 26 January 1955; sold to Ireland in 1970 and renamed Fola.
Bossington (ex-Embleton), launched 2 December 1955; broken up in 1988.
Boulston, launched 6 October 1952; broken up in 1975.
Brereton, launched 14 March 1955; broken up in 1992.
Brinton, launched 8 August 1952; sold in 1997.
Bronington, launched 19 March 1953; became a museum ship in 1989.
Burnaston, launched 18 December 1952; broken up in 1971.
Buttington, launched 11 June 1953; broken up in 1970.
Calton, launched 24 October 1953; broken up in 1968.
Carhampton, launched 21 July 1955; broken up in 1970.
Castleton, launched 26 August 1958; sold to South Africa in 1959 and renamed Johannesburg
Caunton, launched 18 December 1952; broken up in 1970.
Chawton, launched 24 September 1957; broken up in 1977.
Chediston, launched 20 February 1953; sold to Australia in 1968 and renamed Curlew
Chilcompton, launched 6 October 1953; sold in 1971.
Chilton, launched 15 July 1957; sold to South Africa in 1958 and renamed East London.
Clarbeston, launched 18 February 1954; broken up in 1987.
Coniston, launched 9 July 1952; broken up in 1970.
Crichton, launched 17 March 1953; broken up in 1987.
Crofton, launched 7 March 1958; broken up in 1987.
Cuxton, launched 9 November 1953; broken up in 1992.
Dalswinton, launched 24 September 1953; broken up in 1973.
Darlaston, launched 29 September 1953; sold to Malaysia 1960 and renamed Mahamiru.
Derriton, launched 22 December 1953; broken up in 1970. The machinery and fittings were reconditioned and installed in the prototype Glass Reinforced Plastic (GRP) minehunter HMS Wilton (M1116) launched on 18 January 1972 and commissioned on 14 July 1974.
Dilston, launched 15 November 1954; sold to Malaysia in 1964 and renamed Jerai.
Dufton, launched 13 November 1954; broken up in 1977.
Dumbleton, launched 8 November 1957; sold to South Africa in 1958 and renamed Port Elizabeth.
Dunkerton, launched 8 March 1954; sold to South Africa in 1955 and renamed Pretoria.
Durweston, launched 18 August 1955; sold to India in 1956 and renamed Kakinada.
Edderton, launched 1 November 1953; converted to a survey vessel in 1964 and renamed Myrmidon; sold to Malaysia in 1969 and renamed Perantau.
Essington, launched 26 September 1956; Purchased Malaysia 1964 and renamed Kinabalu.
Fenton, launched 2 December 1955; broken up in 1968.
Fiskerton, launched 12 April 1957; broken up in 1977.
Fittleton, launched 26 September 1956; broken up in 1977.
Flockton, launched 3 June 1954; broken up in 1969.
Floriston, launched 26 January 1955; sold in 1968.
Gavinton, launched 27 July 1953; broken up in 1991.
Glasserton, launched 3 December 1953; broken up in 1988.
Hazleton, launched 6 February 1954; sold to South Africa in 1955 and renamed Kaapstaad.
Hexton, launched June 1954; sold to Malaysia in 1963 and renamed Ledang.
Hickleton, launched 26 January 1955; sold to Argentina in 1971 and renamed Neuquen.
Highburton, launched 2 June 1954; Scrapped1978.
Hodgeston, launched 6 April 1954; broken up in 1988.
Houghton, launched 22 November 1957; broken up in 1971.
Hubberston, launched 14 September 1954; broken up in 1992.
Ilmington, launched 8 March 1954; sold to Argentina 1967 and renamed Formosa.
Invermoriston, launched 2 June 1954; converted to air-sea rescue vessel; broken up in 1971.
Iveston, launched 14 October 1954; became a sea cadet training ship in 1993.
Jackton, launched 28 February 1955; sold to Australia 1961 and renamed Teal.
Kedleston, launched 21 December 1953; broken up in 1992.
Kellington, launched 12 October 1954; Became a sea cadet training ship in 1993.
Kemerton, launched 27 November 1953; broken up in 1975.
Kildarton (ex-Liston), launched 23 May 1955; sold in 1969.
Kirkliston, launched 18 February 1954; broken up in 1991.
Laleston, launched 18 May 1954; broken up in 1985.
Lanton, launched 30 July 1954; broken up in 1970.
Letterston, launched 26 October 1954; broken up in 1971.
Leverton, launched 2 March 1955; broken up in 1972.
Lewiston, launched 3 November 1959; broken up in 1986.
Lullington, launched 31 August 1955; sold to Malaysia in 1966 and renamed Tahan.
Maddiston, launched 27 January 1956; broken up in 1975.
Maryton, launched 3 April 1958; broken up in 1969.
Maxton, launched 24 May 1956; broken up in 1989.
Monkton (ex-Kelton), launched 30 November 1955; sold in 1985.
Nurton, launched 22 October 1956; broken up in 1995.
Oakington, launched 10 December 1958; sold to South Africa in 1959 and renamed Mosselbaai.
Oulston, launched 29 September 1953; sold to Ireland in 1971 and renamed Grainne.
Overton, launched 28 January 1956; sold to India in 1956 and renamed Karwar.
Packington, launched 3 July 1958; sold to South Africa in 1959 and renamed Walvisbaai, then sold to the Walt Disney Company to portray the R/V Belafonte in The Life Aquatic With Steve Zissou.
Penston, launched 9 May 1955; broken up in 1970.
Picton, launched 20 October 1955; broken up in 1969.
Pollington, launched 10 October 1957; broken up in 1987.
Puncheston, launched 20 November 1956; broken up in 1977.
Quainton, launched 10 October 1957; broken up in 1979.
Rennington, launched 27 November 1958; sold to Argentina in 1967 and renamed Chaco
Repton (ex-Ossington), launched 1 May 1956; sold in 1982.
Roddington, launched 24 February 1955; broken up in 1972.
Santon, launched 18 August 1955; sold to Argentina in 1967 and renamed Chubut.
Sefton, launched 27 November 1958; broken up in 1978.
Shavington, launched 25 April 1955; broken up in 1987.
Sheraton, launched 20 July 1955; sold in 1997.
Shoulton, launched 10 September 1954; broken up in 1981.
Singleton, launched 18 November 1955; sold to Argentina in 1961 and renamed Ibis.
Soberton, launched 20 November 1956; sold in 1993.
Somerleyton (ex-Gamston), launched 1 July 1954; sold to Australia in 1961 and renamed Hawk.
Stratton, launched 29 July 1957; sold to South Africa in 1959 and renamed Kimberley.
Stubbington, launched 8 August 1956; broken up in 1989.
Sullington, launched 20 July 1955; converted to a survey vessel in 1965 and renamed Mermaid; broken up in 1970.
Swanston, launched 10 September 1954; sold to Australia in 1954 and renamed Gull.
Tarlton, launched 18 November 1955; sold to Argentina in 1967 and renamed Rio Negro.
Thankerton, launched 4 September 1955; sold to Malaysia in 1966 and renamed Brinchang.
Upton, launched 15 March 1956; broken up in 1991.
Walkerton, launched 21 November 1956; broken up in 1990.
Wasperton, launched 28 February 1956; sold in 1986.
Wennington, launched 6 April 1955; sold to India in 1956 and renamed Cuddalore.
Whitton, launched 30 January 1956; sold to India in 1956 and renamed Cannanore.
Wiston, launched 3 June 1958; broken up in 1982.
Wlkieston, launched 26 June 1956; broken up in 1976.
Wolverton, launched 22 October 1956; sold to Hong Kong in 1986 and converted to a floating restaurant; destroyed in a fire in 1991.
Woolaston, launched 6 March 1958; broken up in 1980.
Wotton, launched 24 April 1956; broken up in 1992.
Yarnton, launched 26 March 1956; sold in 1986.