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.
The Leander-class, or Type 12I (Improved) frigates, comprising twenty-six vessels, was among the most numerous and long-lived classes of frigate in the Royal Navy's modern history. The class was built in three batches between 1959 and 1973. It had an unusually high public profile, due to the popular BBC television drama series Warship. The Leander silhouette became synonymous with the Royal Navy through the 1960s until the 1980s.
The Type 12 or Whitby-class frigates were a six-ship class of anti-submarine frigates of the Royal Navy, which entered service late in the 1950s. They were designed in the early 1950s as first-rate ocean-going convoy escorts, in the light of experience gained during World War II. At this time, the Royal Navy were designing single-role escorts and the Whitbys were designed as fast convoy escorts capable of tackling high-speed submarines. However, this made the Whitbys more expensive and sophisticated to produce in large numbers in the event of a major war, and so the Type 14 "utility" or "second-rate" anti-submarine frigate was developed to complement the Type 12. Although themselves rapidly outdated, the Type 12 proved to be an excellent basis for a series of frigate designs used by the British and Commonwealth navies for the next 20 years.
HMS Ajax was a Leander-class frigate of the Royal Navy. She was built by the famous Cammell Laird company of Birkenhead. Ajax was launched on 16 August 1962 and commissioned on 10 December 1963. She was originally intended to be named HMS Fowey, and laid down as a Rothesay class, but instead became part of Batch 1 of the Leander class.
HMS Dido was a Royal Navy (RN) Leander-class frigate. Entering service in 1961, Dido was involved in the Indonesia–Malaysia confrontation, served with NATO's Standing Naval Force Atlantic on several occasions, and was one of the frigates used for the filming of the drama series Warship.
The Type 82 or Bristol-class destroyer was a 1960s guided missile destroyer design intended to replace County-class destroyers in the Royal Navy. Originally eight warships were planned to provide area air-defence for the four planned CVA-01 aircraft carriers. They would also have been able to operate independently as modern cruisers "East of Suez".
Seacat was a British short-range surface-to-air missile system intended to replace the ubiquitous Bofors 40 mm gun aboard warships of all sizes. It was the world's first operational shipboard point-defence missile system, and was designed so that the Bofors guns could be replaced with minimum modification to the recipient vessel and (originally) using existing fire-control systems. A mobile land-based version of the system was known as Tigercat.
The Ikara missile was an Australian ship-launched anti-submarine missile, named after an Australian Aboriginal word for "throwing stick". It launched an acoustic torpedo to a range of 10 nautical miles (19 km), allowing fast-reaction attacks against submarines at ranges that would otherwise require the launching ship to close for attack, placing itself at risk. By flying to a distant target, the engagement time was dramatically shorter than provided by short-range weapons, giving the target less time to respond.
HMAS Stuart was one of six River-class destroyer escorts built for the Royal Australian Navy (RAN). The ship was laid down by the Cockatoo Docks and Engineering Company at Cockatoo Island Dockyard in 1959, and commissioned into the RAN in 1963.
HMAS Swan, named for the Swan River, was a River-class destroyer escort of the Royal Australian Navy (RAN). Constructed in Melbourne following the loss of HMAS Voyager, Swan entered service in 1970.
Type 12 frigate refers to several ship classes, most commonly the three ship classes of the Royal Navy designed during the 1950s and constructed during the 1960s.
A target ship is a vessel — typically an obsolete or captured warship — used as a seaborne target for naval gunnery practice or for weapons testing. Targets may be used with the intention of testing effectiveness of specific types of ammunition; or the target ship may be used for an extended period of routine target practice with specialized non-explosive ammunition. The potential consequences of a drifting wreck require careful preparation of the target ship to prevent pollution, or a floating or submerged collision risk for maritime navigation.
The Perth-class destroyers were three modified Charles F. Adams-class guided missile destroyers operated by the Royal Australian Navy (RAN). Ordered from Defoe Shipbuilding Company during 1962 and 1963, HMA Ships Perth, Hobart, and Brisbane were the first guided missiled-armed warships, and the first naval ships of United States design, to enter service with the RAN. All three ships operated during the Vietnam War, while Brisbane also participated in the Gulf War. The class was decommissioned between 1999 and 2001, with all three vessels later sunk as dive wrecks.
HMAS Derwent, named for the Derwent River, was a River-class destroyer escort of the Royal Australian Navy (RAN). She was laid down by Williamstown Naval Dockyard in 1959, and commissioned into the RAN in 1964. During the ship's career, she was deployed to South East Asia on 23 occasions, including operations during the Indonesia-Malaysia Confrontation, and escort of the troopship HMAS Sydney to and from the Vietnam War. Multiple flag-showing cruises were also embarked upon, with port visits throughout Asia, the Indian Ocean, and the Pacific Ocean. Derwent was also briefly used to portray a fictional vessel for the British drama series Warship.
The River class was a class of six torpedo-boat destroyers operated by the Royal Australian Navy (RAN). The design was based on a modified version of the British River-class destroyer, 13 of which were planned under the 1904 Naval Estimates, but were cancelled before orders were placed. The first batch of three ships was ordered for the Commonwealth Naval Forces in 1909, followed later by a second batch of three a few years later. All six vessels are named after Australian rivers.
The Rothesay class, or Type 12M frigates were a class of frigates serving with the Royal Navy, South African Navy and the Royal New Zealand Navy.
HMNZS Otago (F111) was a Rothesay-class frigate acquired from the United Kingdom by the Royal New Zealand Navy (RNZN) before completion.
HMS Rothesay was the lead ship of the Rothesay or Type 12M class of anti-submarine frigates of the British Royal Navy. She was commissioned in 1960 and scrapped in 1988.
HMS Lowestoft was a Rothesay-class or Type 12M class anti-submarine frigate of the British Royal Navy. Lowestoft was reconstructed in the late 1960s to largely the same pattern as the third group of Leander-class frigates, with new radar and fire control and a hangar and pad for a Westland Wasp helicopter for longer range, anti-submarine, engagement. In the late 1970s it was converted as the prototype towed array frigate for the Royal Navy, but retained its full armament. Lowestoft was sunk as a target on 8 June 1986 by HMS Conqueror using a Tigerfish torpedo. She was the last Royal Naval target to be sunk still displaying her pennant number.
HMS Berwick was a Rothesay- or Type 12I-class anti-submarine frigate of the British Royal Navy. She was built by Harland & Wolff and launched on 15 December 1959.
Royal Australian Navy 
