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.
A minehunter is a naval vessel that seeks, detects, and destroys individual naval mines. Minesweepers, on the other hand, clear mined areas as a whole, without prior detection of mines. A vessel that combines both of these roles is known as a mine countermeasures vessel (MCMV).
The Hunt class is a class of thirteen mine countermeasure vessels of the Royal Navy. As built, they combined the separate roles of the traditional minesweeper and that of the active minehunter in one hull, but later modifications saw the removal of mine-sweeping equipment. They have a secondary role as offshore patrol vessels.
The Sandown class is a class of fifteen minehunters built primarily for the Royal Navy by Vosper Thornycroft. The Sandown class also serve with the Royal Saudi Navy, the Estonian Navy, and the Ukrainian Navy. The first vessel was commissioned into Royal Navy service on 9 June 1989 and all the British ships were named after coastal towns and cities. Although the class had a primary mine countermeasures role, they have had a secondary role as offshore patrol vessels. As of early 2024, only one vessel of the class remains in active service with the Royal Navy.
The Hunt-class minesweeper was a class of minesweeping sloop built between 1916 and 1919 for the Royal Navy. They were built in two discrete groups, the earlier Belvoir group designed by the Ailsa Shipbuilding Company and the subsequent Aberdare group designed by the Admiralty. They were classed as Fleet Minesweeping Sloops, that is ships intended to clear open water. The Belvoir group were named after British fox hunts. Those of the Aberdare group were originally named after coastal towns, watering places and fishing ports, some of which happened to be hunts by coincidence. However, all were soon renamed after inland locations to prevent confusion caused by the misunderstanding of signals and orders.
The Bangor-class minesweepers were a class of warships operated by the Royal Navy (RN), Royal Canadian Navy (RCN), Imperial Japanese Navy (IJN), and Royal Indian Navy (RIN) during the Second World War.
The Ton class were coastal minesweepers built in the 1950s for the Royal Navy, but also used by other navies such as the South African Navy and the Royal Australian Navy. 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.
HMS Bangor is a Sandown-class minehunter commissioned by the Royal Navy in 1999. Designed to hunt naval mines in depths of up to 200 m (660 ft) using the Sonar 2093 Variable Depth Sonar (VDS) meaning that she can conduct mine clearance operations throughout the continental shelf. She is named after the Northern Ireland seaside city of the same name, and the second Royal Navy vessel to bear the name. As of January 2024, she was the last vessel of her class in active Royal Navy service.
Type 320 Lindau-class minehunters was a class of German coastal minehunters built as part of the first FRG naval program. The ships were made from non-metallic components and built by Burmester Bremen. None of these ships now remain in service with the German Navy. Several went into service with the Estonian and Lithuanian Navy, as well as the Latvian Naval Forces. Flensburg and Weilheim became museum pieces.
The Osprey class are a series of coastal minehunters designed to find, classify, and destroy moored and bottom naval mines from vital waterways.
A mine countermeasures vessel or MCMV is a type of naval ship designed for the location of and destruction of naval mines which combines the role of a minesweeper and minehunter in one hull. The term MCMV is also applied collectively to minehunters and minesweepers.
The Tripartite class is a class of minehunters developed from an agreement between the navies of Belgium, France and the Netherlands. A total of 35 ships were constructed for the three navies. The class was constructed in the 1980s–1990s in all three countries, using a mix of minehunting, electrical and propulsion systems from the three member nations. In France, where they are known as the Éridan class they are primarily used as minehunters, but have been used for minesweeping and ammunition transport in Belgium and the Netherlands, where the Tripartites are known as the Alkmaar class.
HMS Pembroke was a Sandown-class minehunter of the Royal Navy. She was the second ship launched of the second batch of the class, which had several improvements over the first five ships built. The ship was posted for three years to the Persian Gulf between 2009 and 2012. Pembroke has since been deployed in international exercises and in historic ordnance detection in home waters. Pembroke was the first of the Royal Navy’s Mine Countermeasures Vessels to be fitted with the Oceanographic Reconnaissance Combat Architecture combat system to replace the previous NAUTIS combat system in early 2020.
Sublocotenent Ion Ghiculescu (M270) is a Sandown-class minehunter of the Romanian Naval Forces. She was built as HMS Blyth (M111), for the Royal Navy, the eleventh of this class of twelve Single-Role Minehunters (SRMH) ships. She was laid down on 30 May 1999 by Vosper Thornycroft at their Woolston, Southampton shipyard, launched in May 2000 and entered service for the Royal Navy in February 2001. She was the second vessel to carry this name, the first being a Bangor-class minesweeper of the Second World War, wearing pennant number J15. Blyth served in the Middle East as part of the 9th Mine Countermeasures Squadron.
HMS Berkeley was a Hunt-class mine countermeasures vessel of the British Royal Navy. She was sold to the Hellenic Navy in 2001 and was commissioned as HS Kallisto. On 27 October 2020, she was cut in two in a collision with a container ship.
Avenger-class mine countermeasures ships are a class of 14 ships constructed for the United States Navy from 1987 to 1994, designed to clear mines from vital waterways. The ships have the hull designator MCM.
The Lerici class is a class of minehunters constructed by Intermarine SpA and owned and operated by the Italian Navy. The class incorporates two subclasses: the first four ships are referred to specifically as the first series of the Lerici class, while eight more ships produced to a slightly modified design are known as "second series Lericis" or as the Gaeta class.
The Hirashimaclass is a class of coastal minesweepers of the Japan Maritime Self-Defense Force.
The Uwajimaclass is a class of coastal minesweepers of the Japan Maritime Self-Defense Force.