The RUR-5 ASROC is an all-weather, all sea-conditions anti-submarine missile system. Developed by the United States Navy in the 1950s, it was deployed in the 1960s, updated in the 1990s, and eventually installed on over 200 USN surface ships, specifically cruisers, destroyers, and frigates. The ASROC has been deployed on scores of warships of many other navies, including Canada, Germany, Italy, Japan, the Republic of China, Greece, Pakistan and others.
A frigate is a type of warship. In different eras, the roles and capabilities of ships classified as frigates have varied somewhat.
The United States Navy, United States Coast Guard, and United States National Oceanic and Atmospheric Administration (NOAA) use a hull classification symbol to identify their ships by type and by individual ship within a type. The system is analogous to the pennant number system that the Royal Navy and other European and Commonwealth navies use.
The Type 21 frigate, or Amazon-class frigate, was a British Royal Navy general-purpose escort that was designed in the late 1960s, built in the 1970s and served throughout the 1980s into the 1990s.
The Type 81, or Tribal class, frigates were ordered and built as sloops to carry out similar duties to the immediate post war improved Black Swan-class sloops and Loch-class frigates in the Persian Gulf. In the mid 1960s the seven Tribals were reclassified as second class general-purpose frigates to maintain frigate numbers. After the British withdrawal from East of Suez in 1971 the Tribals operated in the NATO North Atlantic sphere with the only update the fitting of Seacat missiles to all by 1977, limited by their single propeller and low speed of 24 knots. In 1979–80 age and crew and fuel shortages saw them transferred to the stand-by squadrons; three were reactivated in 1982 during the Falklands War for training and guardship duties in the West Indies.
HMS Leeds Castle (P258) was a Castle-class patrol vessel built by Hall, Russell & Company of Aberdeen, Scotland for the Royal Navy. She was launched in October 1980 and commissioned the following August. She was involved in the 1982 Falklands War, operating between the British territories of Ascension Island, South Georgia, and the Falkland Islands as a dispatch vessel commanded by Lieutenant-Commander Colin Hamilton.
The 46 Knox-class frigates were the largest, last, and most numerous of the US Navy's second-generation anti-submarine warfare (ASW) escorts. Originally laid down as ocean escorts, they were all redesignated as frigates on 30 June 1975, in the 1975 ship reclassification plan and their hull designation changed from 'DE' to 'FF'. The Knox class was the Navy's last destroyer-type design with a steam turbine powerplant.
HMS Tartar (F133) was a Tribal-class frigate of the Royal Navy (RN). She was named after the Tartar people, most of whom were located in Asia and Eastern Europe. She was sold to the Indonesian Navy in 1984 as KRI Hasanuddin (333).
The Anzac class is a ship class of ten frigates; eight operated by the Royal Australian Navy (RAN) and two operated by the Royal New Zealand Navy (RNZN). During the 1980s, the RAN began plans to replace the River-class destroyer escorts with a mid-capability patrol frigate and settled on the idea of modifying a proven German design for Australian conditions. Around the same time, the RNZN was seeking to replace their Leander-class frigates while maintaining blue-water capabilities. A souring of relations between New Zealand and the United States of America in relation to New Zealand's nuclear-free zone and the ANZUS security treaty prompted New Zealand to seek improved ties with other nations, particularly Australia. As both nations were seeking warships of similar capabilities, the decision was made in 1987 to collaborate on their acquisition. The project name is taken from the Australian and New Zealand Army Corps of the First World War.
HMS Dumbarton Castle (P265) was an offshore patrol vessel of the British Royal Navy. Her main role was the protection of the offshore assets of the United Kingdom, including oil and gas installations and fisheries out to the 200-nautical-mile limit.
HMAS Warramunga is an Anzac-class frigate of the Royal Australian Navy (RAN). One of ten frigates built for the Australian and New Zealand navies, Warramunga was laid down by Tenix Defence in 1997 and commissioned in 2001. During her career, the frigate has operated in the Persian Gulf as part of Operation Catalyst, and undertaken anti-piracy operations off Somalia. Warramunga underwent the Anti-Ship Missile Defence (ASMD) upgrade during 2014. She is active as of October 2022.
The Cheng Kung-class frigates are eight guided-missile frigates in service in the Republic of China Navy (ROCN). They are based upon the U.S. Oliver Hazard Perry class and built by China Shipbuilding Corporation in Kaohsiung, Taiwan under license throughout the 1990s as part of the Kuang Hua I project. These frigates served as the mainstay of the ROCN's area air defense capability prior to the acquisition of the Keelung (Kidd)-class destroyers in 2005. They are designated with the hull classification PFG rather than FFG used by the Oliver Hazard Perry class.
USS Stein (DE-1065) was a Knox-class destroyer escort, later redesignated as a frigate (FF-1065) of the United States Navy. She was named after Tony Stein, the first Marine to receive the Medal of Honor for action in the Battle of Iwo Jima.
The Cassiopea class is a heavy series of four patrol boats of the Italian Navy. They were built in the late 1980s on civilian standards. They are designed for patrol in safe areas.
The Oaxaca class are offshore patrol vessels, constructed and designed by and for the Mexican Navy. The class is named after the Mexican state of Oaxaca. The Mexican Navy has requested seven of these ships with four already in service, three in construction, which were disclosed on June 1 on the Navy anniversary, with the name PO-163 Independencia, which is to celebrate the 200th anniversary of the Independence of Mexico. Also, another ship PO-164, named Revolucion, is in the process of raising the Mexican flag in a couple of months. Two more to be constructed in Navy's Naval Shipyards.
The Sierra-class corvettes are corvettes of the Mexican Navy intended mainly for interception of drug smugglers, exclusive economic zone (EEZ) patrol, and countering terrorism. The class comprises four ships with the lead ship ARM Sierra commissioned by the Mexican Navy in 1998. One ship, ARM Benito Juárez, was sunk as a target ship in 2007 after being wrecked by fire in 2003. The other three vessels remain in service.
Holzinger-class patrol vessels are offshore patrol vessels in service with the Mexican Navy. They are a Mexican design, based on the Uribe class developed by the Spanish Naval Company Empresa Nacional Bazán in 1982. Holzinger-class patrol vessels have a smaller helicopter deck than the Uribe class and have main armaments at 'A' position. They are able to operate MBB Bo 105 helicopters on board.
Mantilla-class patrol vessels are offshore patrol vessels in use by the Argentine Coast Guard since 1983.
Rezvyy or Rezvy was the lead Project 1135M Burevestnik-class Guard Ship or 'Krivak II'-class frigate. Launched on 30 May 1975, the vessel was designed to operate in an anti-submarine role in the Soviet Navy, with armament built around the Metel Anti-Ship Complex. Part of the Northern Fleet, the vessel undertook operations in the Atlantic Ocean, including visits to Congo and Cuba, and participating in the Atlantic-84 major naval exercise in 1984. After a major refit between 1989 and 1992, Rezvyy was recommissioned into the Russian Navy. The ship continued to travel, visiting Norway in 1993. After more than twenty-five years service, Rezvyy was decommissioned on 1 June 2001 and subsequently broken up.
Mexican Navy