HMS Dido was a Leander-class frigate of the Royal Navy, constructed by Yarrow of Glasgow. Originally laid down as a Rothesay-class frigate named Hastings on December 2, 1959, she was redesignated as a Leander-class vessel in 1960 and launched on December 22, 1961, with her commissioning following on September 18, 1963. The vessel measured 372 feet (113.4 meters) overall in length, with a beam of 41 feet (12.5 meters) and a maximum draught of 18 feet (5.5 meters). Displacing approximately 2,380 long tons (2,420 metric tons) standard and up to 2,860 long tons (2,910 metric tons) at full load, Dido was powered by two oil-fired boilers driving twin steam turbines rated at 30,000 shaft horsepower, enabling her to reach speeds of 28 knots (about 52 km/h). Her armament initially included a twin 4.5-inch (113 mm) Mark 6 gun mount at the bow, with two Bofors 40 mm anti-aircraft guns as temporary anti-aircraft defenses until the planned Sea Cat missile system could be installed. She was equipped with a Limbo anti-submarine mortar aft and a hangar with a helicopter deck supporting a Westland Wasp helicopter for anti-submarine and surface operations. Her radar suite featured a Type 965 long-range air search radar, Type 993 short-range radar, and Type 974 navigation radar, complemented by sonar systems including Type 177, Type 162, Type 170, and Type 199 VDS for comprehensive anti-submarine capabilities. Dido's service history included deployment to the Far East, joining the 22nd Escort Group in 1964, and participating in the Indonesia–Malaysia confrontation. She also served with NATO's Standing Naval Force Atlantic intermittently from 1969, including participation in the 1969 NATO fleet review. Notably, she was used as a filming vessel for the BBC drama series Warship. In the mid-1970s, Dido underwent a significant refit at Devonport, converting her into a Batch 1B Ikara missile-equipped frigate, replacing her 4.5-inch gun turret with an Ikara anti-submarine missile launcher and fitting Sea Cat launchers. Her radar and combat systems were upgraded, including the addition of the ADAWS 5 computer system. After this refit, she joined the 3rd Frigate Squadron and was briefly assigned again to NATO forces in 1983. Following the 1981 defense review, Dido was sold to the Royal New Zealand Navy and recommissioned as HMNZS Southland in 1983. She served until decommissioning in 1995, after which she was towed to the Philippines and then India for scrapping. Her lengthy service and technological upgrades underscore her maritime significance during her operational life, especially in anti-submarine warfare and NATO collaborations.

This description has been generated using GPT-4.1-NANO based on the Vessel's wikidata information and then modified by ShipIndex.org staff.