De Moor (M905)
History
United Kingdom
Name	Rosario
Namesake	Rosario
Ordered	15 November 1940
Builder	Harland & Wolff, Belfast
Laid down	22 September 1942
Launched	3 April 1943
Commissioned	9 July 1943
Decommissioned	1946
Identification	Pennant number: J219
Fate	Sold to the Belgium, January 1953
Belgium
Name	De Moor
Namesake	De Moor
Acquired	1953
Commissioned	15 January 1953
Decommissioned	1969
Identification	Pennant number: M905
Fate	Scrapped, 1970
General characteristics
Class and type	Algerine-class minesweeper
Displacement	850 long tons (864 t) (standard) 1,125 long tons (1,143 t) (deep)
Length	225 ft (69 m) o/a
Beam	35 ft 6 in (10.82 m)
Draught	11 ft 6 in (3.51 m)
Installed power	2 × Admiralty 3-drum boilers 2,000 ihp (1,500 kW)
Propulsion	2 shafts 2 × Parsons geared steam turbines
Speed	16.5 knots (30.6 km/h; 19.0 mph)
Range	5,000 nmi (9,300 km; 5,800 mi) at 10 knots (19 km/h; 12 mph)
Complement	85
Armament	1 × QF 4 in (102 mm) Mk V anti-aircraft gun 4 × twin Oerlikon 20 mm cannon

HMS Rosario (J219) was a steam turbine-powered Algerine-class minesweeper during the Second World War. She survived the war and was sold to Belgium in 1953 as De Moor (M905).

The turbine-powered ships displaced 850 long tons (860 t) at standard load and 1,125 long tons (1,143 t) at deep load. The ships measured 225 feet (68.6 m) long overall with a beam of 35 feet 6 inches (10.8 m). The turbine group had a draught of 11 feet (3.4 m). The ships' complement consisted of 85 officers and ratings.^[1]

The ships had two Parsons geared steam turbines, each driving one shaft, using steam provided by two Admiralty three-drum boilers. The engines produced a total of 2,000 indicated horsepower (1,500 kW) and gave a maximum speed of 16.5 knots (30.6 km/h; 19.0 mph). They carried a maximum of 660 long tons (671 t) of fuel oil that gave them a range of 5,000 nautical miles (9,300 km; 5,800 mi) at 10 knots (19 km/h; 12 mph).^[1]

The Algerine class was armed with a QF 4 in (102 mm) Mk V anti-aircraft gun^[2] and four twin-gun mounts for Oerlikon 20 mm cannon. The latter guns were in short supply when the first ships were being completed and they often got a proportion of single mounts. By 1944, single-barrel Bofors 40 mm mounts began replacing the twin 20 mm mounts on a one for one basis. All of the ships were fitted for four throwers and two rails for depth charges.^[1]

The ship was ordered on 15 November 1940 at the Harland & Wolff at Belfast, Ireland. She was laid down on 22 September 1942 and launched on 3 April 1943. She was commissioned on 9 July 1943.^[3]

Rosario was decommissioned in 1947.

She was then sold to Belgium in 1953.

Rosario was renamed De Moor and was commissioned on 15 January 1953.

On 4 April 1967, the ship left Oostende for Australia on a 6 month scientific expedition. She made multiple port calls to Tunis, Port Said, Massawa, Colombo, Djakarta, Fremantle, Melbourne, Sydney, Brisbane, Cairns, Gladstone, Townsville, Darwin, Singapore, Cochin, Diego Suarez, Cape town, Abidjan and Tenerife. She returned back to Oostende on 20 February 1968. The ship had to return via South Africa due to the ongoing War of Attrition between Egypt and Israel.^[3]

The ship was decommissioned in 1969 and sold for scrap in Bruges, 1970.

• Chesneau, Roger, ed. (1980). Conway's All the World's Fighting Ships 1922–1946. Greenwich, UK: Conway Maritime Press. ISBN 0-85177-146-7.
• Colledge, J. J.; Warlow, Ben (2006) [1969]. Ships of the Royal Navy: The Complete Record of all Fighting Ships of the Royal Navy (Rev. ed.). London: Chatham Publishing. ISBN 978-1-86176-281-8.
• Elliott, Peter (1977). Allied Escort Ships of World War II: A complete survey. London: Macdonald and Jane's. ISBN 0-356-08401-9.
• Lenton, H. T. (1998). British & Empire Warships of the Second World War. Annapolis, Maryland: Naval Institute Press. ISBN 1-55750-048-7.

• HMS Rosario (J 219) of the Royal Navy - British Minesweeper of the Algerine class - Allied Warships of WWII at uboat.net