Anticosti-class minesweeper
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The ''Anticosti''-class minesweepers were a class of
minesweeper A minesweeper is a small warship designed to remove or detonate naval mines. Using various mechanisms intended to counter the threat posed by naval mines, minesweepers keep waterways clear for safe shipping. History The earliest known usage of ...
s that served with the
Canadian Forces } The Canadian Armed Forces (CAF; french: Forces armées canadiennes, ''FAC'') are the unified military forces of Canada, including sea, land, and air elements referred to as the Royal Canadian Navy, Canadian Army, and Royal Canadian Air Force. ...
from 1989–2000. The class consisted of two former
oil rig {{about, , the mnemonic OIL RIG, Redox An oil rig is any kind of apparatus constructed for oil drilling. Kinds of oil rig include: * Drilling rig, an apparatus for on-land oil drilling * Drillship, a floating apparatus for offshore oil drilling * ...
supply vessels, ''Jean Tide'' and ''Joyce Tide''. They were acquired by
Maritime Command Allied Maritime Command (MARCOM) is the central command of all NATO maritime forces and the Commander MARCOM is the prime maritime advisor to the Alliance. When directed by the Supreme Allied Commander Europe (SACEUR), it provides the core of th ...
(MARCOM) and commissioned in May 1989 with ''Jean Tide'' becoming and ''Joyce Tide'' becoming . Once the s became operational, the ''Anticosti'' class was discarded and the two ships returned to mercantile use.


Design

Laid down Laying the keel or laying down is the formal recognition of the start of a ship's construction. It is often marked with a ceremony attended by dignitaries from the shipbuilding company and the ultimate owners of the ship. Keel laying is one o ...
as ''Lady Joyce'' and ''Lady Jean'' by
Allied Shipbuilders Ltd. Allied Shipbuilders Ltd is a privately held shipbuilding and ship repairing company established in Canada in 1948. Company profile Founded in 1948 by Arthur McLaren (1919-1999), Allied Shipbuilders is one of the older continually operatin ...
of
Vancouver Vancouver ( ) is a major city in western Canada, located in the Lower Mainland region of British Columbia. As the List of cities in British Columbia, most populous city in the province, the 2021 Canadian census recorded 662,248 people in the ...
, the two ships of the class were initially constructed for use as offshore drill-rig supply vessels by International Offshore Services. Later renamed, they were purchased in 1988 by the Maritime Command of the Canadian Forces and converted into
minesweeper A minesweeper is a small warship designed to remove or detonate naval mines. Using various mechanisms intended to counter the threat posed by naval mines, minesweepers keep waterways clear for safe shipping. History The earliest known usage of ...
s. The vessels were
long overall __NOTOC__ Length overall (LOA, o/a, o.a. or oa) is the maximum length of a vessel's hull measured parallel to the waterline. This length is important while docking the ship. It is the most commonly used way of expressing the size of a ship, and ...
with a
beam Beam may refer to: Streams of particles or energy *Light beam, or beam of light, a directional projection of light energy **Laser beam *Particle beam, a stream of charged or neutral particles **Charged particle beam, a spatially localized grou ...
of and a draught of . Fully loaded, the ships of the class displaced . The ''Anticosti'' class was powered by four
NOHAB NOHAB (Nydqvist & Holm AB) was a manufacturing company based in the city of Trollhättan, Sweden. History The company was founded by Antenor Nydqvist, Johan Magnus Lidström and Carl Olof Holm in 1847 as ''Trollhättans Mekaniska Verkstad'' as ...
Polar SF 16RS
diesel engine The diesel engine, named after Rudolf Diesel, is an internal combustion engine in which ignition of the fuel is caused by the elevated temperature of the air in the cylinder due to mechanical compression; thus, the diesel engine is a so-call ...
s driving two
shafts ''Shafts'' was an English feminist magazine produced by Margaret Sibthorp from 1892 until 1899. Initially published weekly and priced at one penny, its themes included votes for women, women's education, and radical attitudes towards vivisection, ...
creating and one Gil Jet azimuth bow thruster. This created a maximum speed of and an endurance of at . The vessels had a complement of 5 officers and 18 ratings. The two ships of the class were equipped two
Racal Decca The Decca Radar company was a British manufacturer of radar systems. There were originally two divisions, Marine and Heavy Radar, with separate product lines. The latter was sold to Plessey in 1965, and the term "Decca Radar" normally refers to ...
navigation
radar Radar is a detection system that uses radio waves to determine the distance (''ranging''), angle, and radial velocity of objects relative to the site. It can be used to detect aircraft, ships, spacecraft, guided missiles, motor vehicles, w ...
s operating on the I band. For minesweeping purposes, they were provided with mechanical
minesweeping Minesweeping is the practice of the removal of explosive naval mines, usually by a specially designed ship called a minesweeper using various measures to either capture or detonate the mines, but sometimes also with an aircraft made for that ...
equipment and a high frequency, towed side scan variable depth
sonar Sonar (sound navigation and ranging or sonic navigation and ranging) is a technique that uses sound propagation (usually underwater, as in submarine navigation) to navigation, navigate, measure distances (ranging), communicate with or detect o ...
. The vessels were rated as ice class 3 and suitable for employment in light ice.


Ships


Service history

The two ships were constructed by
Allied Shipbuilders Ltd. Allied Shipbuilders Ltd is a privately held shipbuilding and ship repairing company established in Canada in 1948. Company profile Founded in 1948 by Arthur McLaren (1919-1999), Allied Shipbuilders is one of the older continually operatin ...
of
Vancouver Vancouver ( ) is a major city in western Canada, located in the Lower Mainland region of British Columbia. As the List of cities in British Columbia, most populous city in the province, the 2021 Canadian census recorded 662,248 people in the ...
and named ''Joyce Tide'' and ''Jean Tide''. After completion ''Jean Tide'' served as an oil rig logistics support vessel for International Offshore Service of Liberia. In 1975 she was sold to Tidewater Marine. ''Jean Tide'' remained with this company until her sale in 1988. As part of the plan for the Naval Reserve to take over minesweeping and coastal operations, MARCOM began its effort to provide ships for training. MARCOM acquired two ships in March 1988. The ships were handed over for conversion by Fenco MacLaren Incorporated (later
SNC-Lavalin SNC-Lavalin Group Inc. is a Canadian company based in Montreal that provides engineering, procurement, and construction (EPC) services to various industries, including mining and metallurgy, oil and gas, environment and water, infrastructure, a ...
Defence Programs Inc.) at
Halifax, Nova Scotia Halifax is the capital and largest municipality of the Canadian province of Nova Scotia, and the largest municipality in Atlantic Canada. As of the 2021 Census, the municipal population was 439,819, with 348,634 people in its urban area. The ...
and commissioned. ''Anticosti'' (formerly ''Jean Tide'') was commissioned on 7 May 1989 with
hull number Hull number is a serial identification number given to a boat or ship. For the military, a lower number implies an older vessel. For civilian use, the HIN is used to trace the boat's history. The precise usage varies by country and type. United S ...
MSA 110. ''Moresby'' (formerly ''Joyce Tide'') entered service on 1 January 1990 with the hull number MSA 112. The vessels sailed to Marystown, Newfoundland for conversion. In April 1990 they had their mechanical sweep gear and sonar fitted. ''Anticosti'' was assigned to
Maritime Forces Atlantic In the Canadian Forces, Maritime Forces Atlantic (MARLANT) is responsible for the fleet training and operational readiness of the Royal Canadian Navy in the Atlantic Ocean and Arctic Ocean. It was once referred to as Canadian Atlantic Station. ...
(MARLANT) as a minesweeping training vessel in preparation for the
Maritime Coastal Defence Vessel Project The Maritime Coastal Defence Vessel Project (MCDVP) was a procurement project undertaken by the Department of National Defence beginning in the mid-1980s to find a replacement to fill the minesweeper, coastal patrol and reserve training needs of ...
(MCDV), which would become the ''Kingston'' class in the late 1990s. ''Anticosti'' was deployed by MARLANT in the annual MARCOT exercises as a minelayer. In March 1997, ''Moresby'' transferred to CFB Esquimalt. During the investigation into the Swissair Flight 111 crash in September 1998, ''Anticosti'' was among the Maritime Command vessels that responded to the crash site. She among the many ships scoured the sea looking for the aircraft's black box as part of Operation "Persistence". In March 1999, ''Anticosti'' sailed with ''Kingston''-class vessels and to the Baltic Sea to participate in the
NATO The North Atlantic Treaty Organization (NATO, ; french: Organisation du traité de l'Atlantique nord, ), also called the North Atlantic Alliance, is an intergovernmental military alliance between 30 member states – 28 European and two No ...
naval exercise "Blue Game". After the ''Kingston'' class entered service, the ''Anticosti'' class was identified as surplus and ''Moresby''
paid off Ship commissioning is the act or ceremony of placing a ship in active service and may be regarded as a particular application of the general concepts and practices of project commissioning. The term is most commonly applied to placing a warship in ...
on 10 March 2000. ''Anticosti'' paid off on 21 March 2000. They were sold to commercial interests in January 2002.


References


Notes


References

* * * *


External links

* {{Anticosti class minesweeper Mine warfare vessel classes