The Bouchard-class minesweepers were a class of nine minesweepers, designed and built in Argentina, in service with the Argentine Navy from 1937 to the late 1960s. One of the class was lost after running aground in the Straits of Magellan and the remaining eight were discarded. Three were transferred to the Paraguayan Navy and remained in service as of late 1990s. In Paraguayan service, they were used for river patrol work. One of the class was docked in Asunción in 2009 with the intention of converting the vessel to a museum ship

Design and description The Bouchard-class minesweepers were the first large warships built in Argentina. They were intended to complement and eventually replace the Argentine Bathurst-class ships purchased from Germany after World War I. They were designed in the early 1930s and laid down in 1935–1937.

The Bouchard class was based on the Bathurst-class design, with diesel engines instead of steam engines and larger calibre (99 mm Bethlehem-Vickers) main armament. However, these ships had poor stability, which eventually led to the loss of Fournier in 1949.

The minesweepers were long overall and between perpendiculars with a beam of and a draught of . The Bouchard class had a standard displacement of and at full load. They were powered by 2-cycle MAN diesel engines turning two shafts rated at . They had capacity for of fuel oil, a maximum speed of and had a range of at .Blackman, p. 126.Chesneau, p. 421.Chesneau has the maximum speed listed as .

The ships were armed with two single-mounted /47 calibre guns.The 47 calibre denotes the length of the gun. This means that the length of the gun barrel is 47 times the bore diameter. For anti-aircraft defence, the minesweepers were equipped with one twin mount. They also carried two machine guns and were initially equipped with two depth charges.McMurtrie, p. 115. The Bouchard class had a complement of 62.

Ships in class Bouchard-class minesweepersSharpe, p. 439. Ship name Pennant number Builder Launched Service entry Fate M-7 Río Santiago Naval Yard 20 March 1936 27 January 1937 Transferred to Paraguay February 1964 and renamed Nanawa. M-2 19 June 1936 1937 Discarded 28 March 1964 M-4 27 January 1937 1937 Discarded 19 December 1967 M-11 Sanchez Shipyard, San Fernando 2 May 1937 1937 Discarded 23 July 1963 M-13 Río Santiago Naval Yard 7 June 1937 1938 Discarded 14 March 1962 M-3 Hansen y Puccini, San Fernando 18 August 1938 1939 Discarded 19 December 1967 M-12 18 August 1938 20 May 1939 Discarded 20 November 1967, transferred to Paraguayan Navy and renamed Capitan Meza. (aka Comodoro Py) M-10 Río Santiago Naval Yard 30 March 1938 1 July 1939 Discarded 20 November 1967, transferred to Paraguayan Navy and renamed Teniente Farina. M-5 Sanchez Shipyard, San Fernando 1939 1940 Hit a reef and sank in the Straits of Magellan on 22 September 1949

Service history The Bouchard class were all given names of famous Argentine naval commanders. They were commissioned by the Argentine Navy in the late 1930s and remained in service until the late 1960s. The ships in the class were used in exercises with the main fleet, and very frequently assigned to the Patagonian seas where conditions are very rough. The stability problem of this design was worsened in those seas, which eventually led to the loss of Fournier with all hands during a storm in the Straits of Magellan on 22 September 1949. Fournier struck an uncharted rock at the entrance to the San Gabriel Channel.

Three ships were transferred to the Paraguayan Navy after being decommissioned by Argentina, and remained in service as of the late 1990s. The three ships included Bouchard and Seaver, and PySome sources erroneously claim it was Parker that was the third ship. with Bouchard being renamed Nanawa and commissioned into the Paraguayan Navy on 14 March 1964. Seaver became Capitan Meza and commissioned on 6 May 1968. Py became Teniente Farina and commissioned on 6 May 1968.Nanawa sported the pennant numbers M 1 then P 01, Capitan Meza sported the pennant numbers M 2 then P 02 and Teniente Farina sported the pennant numbers M 3, then P 03. In Paraguayan service they were used as river patrol craft and could carry naval mines. Their armament was modified to just one quad 40 mm mount and the two machine guns.Gardiner, Chumbley & Budzbon, p. 302 Teniente Farina was berthed at Asunción in 2009 with the intention of converting the vessel to a museum ship.

See also List of ships of the Argentine Navy

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