Sea Dart ( missile ) Sea Dart or GWS30 was a British surface - to - air missile system designed by Hawker Siddeley Dynamics and built by British Aerospace from 1977 . It was fitted to the Type 42 destroyers ( UK and Argentina ) , Type 82 destroyers and s of the Royal Navy . The missile system has had nine confirmed successful engagements in combat , including six aircraft , two helicopters and a missile . History . Sea Dart began as Hawker Siddeley project " CF . 299 " , a weapon to replace the Royal Navy ' s first - generation long - range surface - to - air missile , Sea Slug . It entered service in 1973 on the sole Type 82 destroyer before widespread deployment on the Type 42 destroyer commencing with in 1976 . The missile system was also fitted to " Invincible " - class aircraft carriers but was removed during refits in the 1998 - 2000 period to increase the area of the flight deck and below - decks stowage associated with the operation of Royal Air Force Harrier GR9 aircraft . Design . Sea Dart is a two - stage , long missile weighing . It is launched using a drop - off " Chow " solid - fuel booster that accelerates it to the supersonic speed necessary for the operation of the cruise motor , a Rolls - Royce [ Bristol Siddeley ] kerosene - fuelled " Odin " ramjet . This gives a cruise speed of over Mach 2 . 5 , and unlike many rocket - powered designs the cruise engine burns for the entire flight , giving excellent terminal manoeuvrability at extreme range . It is capable of engaging targets out to at least over a wide range of altitudes . It has a secondary capability against small surface vessels , tested against a , although in surface mode the warhead safety arming unit does not arm and thus damage inflicted is restricted to the physical impact of the half - ton missile body and the unspent proportion of the of kerosene fuel . Guidance is by proportional navigation and a semi - active radar homing system using the nose intake cone and four aerials around the intake as an interferometer aerial , with targets being identified by a Type 1022 surveillance radar ( originally radar Type 965 ) and illuminated by one of a pair of radar Type 909 . This allows two targets to be engaged simultaneously in initial versions , with later variants ( see below ) able to engage more . Firing is from a twin - arm trainable launcher that is loaded automatically from below decks . The original launcher seen on the " Bristol " was significantly larger than that which appeared on the Type 42 and " Invincible " classes . Initial difficulties with launcher reliability have been resolved . Combat Service . Falklands War . Sea Dart was used during the Falklands War ( 1982 ) and is credited with seven confirmed kills ( plus one British Aérospatiale Gazelle helicopter downed by friendly fire ) . One kill was against a high - flying Learjet reconnaissance aircraft beyond the missile ' s stated technical envelope . In another engagement , a high - flying Argentine Canberra bomber was shot down . Other kills were made against low - flying attack aircraft . The net effect of Sea Dart was to deny the higher altitudes to enemy aircraft . This was important because Argentine aircraft such as the Mirage had better straight line performance than the Sea Harrier s , which were unlikely to successfully intercept them . The first Sea Dart kill was an Aérospatiale Puma , on 9 May 1982 near Stanley by , with the loss of the 3 men aboard . On 25 May 1982 an A - 4C Skyhawk of Grupo 5 was shot down north of Pebble Island again by " Coventry " . The pilot , Capitán Hugo Angel del Valle Palaver was killed . Later , " Coventry " shot down another Skyhawk of Grupo 4 while it was returning from a mission to San Carlos Water . Capitán Jorge Osvaldo García successfully ejected but was not recovered . The next Argentine action that day saw the sinking of " Coventry " ; no Sea Dart was able to engage the A - 4s , although one was launched without guidance in an effort to disrupt the attack . It missed and the destroyer was struck by two iron bombs and sunk . The same day a Super Etendard strike fighter sought to attack the British carrier group with Exocet missiles , but instead struck the cargo ship . fired 6 Sea Darts in less than 2 minutes , but all missed . On 30 May 1982 , during the last Exocet air attacks against the British fleet , the most successful engagements with Sea Dart occurred and was credited with two Skyhawks ( out of four attackers ) downed , despite them flying only above the sea ( theoretically below Sea Dart ' s minimum engagement altitude of ) . One of the two was engaged by Type 21 frigate HMS Avenger with her gun On June 6 " Exeter " downed a Learjet 35A ( destroying its tail ) that was being used as reconnaissance aircraft , at altitude , but missed a second one . Finally , on 13 June 1982 , a Canberra Mk . 62 was flying at . While it was en route to bomb British troops at Port Harriet House , it was destroyed by a Sea Dart fired from " Cardiff " . In total at least eighteen missiles were launched by Type 42 destroyers , six by " Invincible , " and two by " Bristol " . Out of five missiles fired against helicopters or high flying aircraft , four were successful , but only two of nineteen fired at low level aircraft hit : just eleven percent ; however a number of missiles were fired without guidance to deter low level attacks . " Exeter " s success can be partially attributed to being equipped with the Type 1022 radar , which was designed for the system and provided greater capability than the old Type 965 fitted to the earlier Type 42s . The Type 965 was unable to cope with low level targets as it suffered multiple path crossings and targets became lost in radar clutter from the surface of the South Atlantic , this resulted in Sea Dart being unable to lock onto targets at distance obscured by land , or fast - moving low - level targets obscured in ground clutter or sea - returns . The Argentine Navy was well aware of the Sea Dart ' s capabilities and limitations , having two Type 42s of its own . Consequently , Argentine planes , opting to fly below the Type 965 radar ( " sea skimming " ) , frequently dropped bombs which failed to explode : The arming vane on the bomb had insufficient time to complete the number of revolutions required to arm the fuze , in which case , the fuze remained in safe mode and would not function on impact . Gulf War ( 1991 ) . In February 1991 during the Gulf War the US battleship , escorted by ( carrying Sea Dart ) and ( equipped with Phalanx CIWS ) , was engaged by an Iraqi Silkworm missile ( NATO reporting name " Seersucker " ) . The Silkworm missile was intercepted and destroyed by a Sea Dart fired from " Gloucester " . During the same engagement , the " Jarrett " s Phalanx 20 mm CIWS was placed in autoengagement mode and targeted chaff launched by the " Missouri " rather than the incoming missile . Variants . The Sea Dart was upgraded over the years - notably its electronics - as technology advances . The following modification standards have been fielded : The Sea Dart Mark 2 , GWS 31 , ( also known as Sea Dart II - not to be confused with Mod 2 , above ) development was cancelled in 1981 . This was intended to allow ' off the rail ' manoeuvres with additional controls added to the booster . The Mark 2 was reduced to Advanced Sea Dart , then Enhanced Sea Dart and finally Improved Sea Dart . Guardian was a proposed land - based system of radars , control stations and a box - launched version of Sea Dart proposed in the 1980s for use as a land - based air defence system for the Falkland Islands . A similar lightweight box - launched version was also proposed for small naval craft . Withdrawal . The Sea Dart equipped Type 42s are reaching the end of their service lives , with some vessels already retired . They will be replaced by the larger Type 45 which is armed with the Sea Viper missile system . Sea Viper is much more capable in the anti - air role but has no anti - surface capability . The first - of - class began sea trials in July 2007 and " Daring " entered service in 2009 . On 13 April 2012 fired the last ever operational Sea Dart missiles after a thirty - year career . The last two remaining Type 42s , and " Edinburgh " will complete their careers without the system being operational .