class destroyer class destroyers group destroyers built royal_navy 1930s additional ships built world war began purchased british named class design major export success ships built argentine navies assigned mediterranean_fleet completion enforced spanish civil war ships recalled home sent north_atlantic october november clear going intervene world war began escort convoys patrol german submarines commerce raiders ships lost german mines months war lost combat german cruiser battle april test destroyers june participating evacuation subsequent evacuations allied troops western france ships sunk bombs torpedoes class ships sent mediterranean case decided attack france majority surviving sent july participated battle assigned mediterranean_fleet sister ships end year ships participated battles losing italian mines torpedoes sinking italian submarines spent war north_atlantic convoy escort duties losing half number german submarines helping sink exchange end war class ships mediterranean_fleet escorted numerous malta convoys participated march covered evacuation troops greece crete june losing german bombers badly damaged later written end year sunk submarines italian german participated second battle march damaged damaged aerial attacks ordered gibraltar ran aground transit destroyed torpedoed lost operation vigorous june ships sank submarines destroyers began conversion escort destroyers late year early surviving transferred conversion surviving ships joined half sisters escort duty north_atlantic ship sent mediterranean transferred preparation operation overlord sank german submarines worn obsolete survivors broken scrap sold war design description classes class ordered naval construction programme class following ships based preceding class elimination cruising turbines development compact machinery allowed dimensions displacement slightly reduced class repeats minor differences destroyers fitted ability use speed destroyer sweep gear class destroyers displaced long tons standard load long tons deep load ships overall length feet beam feet draught feet inches peacetime complement officers ratings intended increase wartime ships stability limit built director naval construction believed additions weight equal weight removed powered parsons geared steam turbines driving propeller shaft steam provided admiralty drum boilers operated pressure psi kpa cm2 temperature fitted johnson boiler aft boiler room turbines developed total shaft horsepower gave maximum speed knots mph destroyers carried maximum long tons fuel oil gave range nautical miles knots mph ships main armament quick firing inch mark guns single mounts designated rear guns maximum elevation class achieved lowered section deck mount allowed breech gun lowered deck height new gun mount class designed reach elevation necessity clumsy wells fired pound shell muzzle velocity range yards served twin inch gun mount tribal classes temporarily replaced gun anti aircraft defence quadruple mounts inch machine gun platforms funnels class ships fitted quadruple mounts inch torpedo tubes new mount ships equipped throwers rack depth charges main guns controlled control clock data derived manually operated director control tower separate rangefinder situated bridge capability anti aircraft fire anti aircraft guns aimed solely eye hero saw introduction new style bridge standard royal_navy fleet destroyers class battle class necessary fitted prototype twin gun mounting height inches higher previous weapons necessary raise allow raising meant placed underneath bridge given angled sides resulting characteristic wedge shape sloping roof wartime modifications beginning bank torpedo tubes removed replaced pounder gun mast funnel cut improve gun field fire cannons added surviving ships usually replacing calibre machine gun mounts funnels pair added bridge wings pair mounted abreast platform early war depth charge increased ships afloat gun quarterdeck removed allow additional depth charge additional depth charge throwers pounder removed allow installation radio direction short mainmast depth charges survivors gun replaced anti submarine mortar director control tower rangefinder bridge removed exchange type target indication radar gun later replaced hero exchanged gun twin gun mount pounder hotchkiss guns use boats close range type short range surface search radar adapted royal_air_force radar added early models scan directly forward aimed turning entire ship flotilla leaders class flotilla leaders built enlarged design incorporating fifth inch gun position funnels based class leader shorter heavier hardy compact yarrow type fired boilers hardy slightly displaced long tons standard load long tons deep load ships overall length feet beam feet draught feet inches ships carried total personnel included staff captain commanding officer flotilla turbines shp powerful private ships knots mph faster propulsion machinery identical ships early wartime losses consequently received modifications class laid brazil september anti submarine work completed gun equipped throwers racks total depth charges unlike half sisters fitted combined rangefinder director bridge wartime modifications similar class ships pounder gun replaced aft torpedo tubes added bridge wings type radar installed later modifications replaced calibre machine guns pair type radar added replaced rangefinder director substituted gun pounder removed depth charge mast installed aft ships royal_navy class class class ships ordered outbreak world war royal_navy usually included class seven ships built buenos_aires class delivered built ship lost collision remaining ships service broken early 1970s brazilian navy brazil ordered class ships britain ships purchased britain outbreak war described decided produce indigenous destroyers acre class das shipyard rio_de_janeiro design based class plans supplied britain guns machinery supplied united_states laid ships completed ships modified versions class built yarrow late 1930s ships fitted german millimetre guns millimetre guns number torpedo tubes reduced ships compensate additional installation armament carried greece germans refused ship weapons britain named king george served damaged german aircraft ship managed reach navy yard dry dock repairs damage german air attacks finally scuttled prevent capture germans raised repaired commissioned march heavily damaged tunisia april scuttled named served ships escaped alexandria joined allied forces lost german aircraft anchored september service class spent bulk time start world war assigned 1st destroyer flotilla mediterranean_fleet number neutrality patrols spanish civil war exception repair malta premature explosion depth charges returned home october november clear italians enter war hardy class ships assigned 2nd destroyer flotilla joined mediterranean commissioning similar duties weeks assigned 1st assigned ships transferred 22nd tasked escort patrol duty sunk november struck january unlike 1st second transferred force west_africa help search german commerce raiders ships later transferred bermuda west indies escort work patrolling returned january spent months commissioning renamed respectively avoid confusion hardy class destroyers initially formed 9th destroyer flotilla assigned anti submarine patrols escort duty german invasion norway caused detached reinforce home_fleet repair early stages participate battles april remaining ships assigned home_fleet time separated battlecruiser renown heavy storm april encountered german heavy cruiser admiral hipper destroyers british destroyer sunk admiral hipper hardy hostile hunter participated april sank german destroyers exchange loss hardy hunter badly damaged day hero sank german submarine norwegian coast class destroyer participate second battle days later griffin hasty helped cover evacuation allied troops end month escorted transports conducting evacuation june loaned repairs finished remained mediterranean escorting convoys malta alexandria egypt transferred september mid 2nd transferred mediterranean hostile hero hasty assigned later month remaining class ships participated operation torpedoed whilst rescuing survivors torpedoed destroyer scuttled destroyer later day grenade blew set fire german bombs days later june sunk german bombers damaged evacuating troops helped evacuate troops operation cycle griffin participated evacuation allied troops jean ships 2nd participated inconclusive july weeks later hasty hero escorting australian light cruiser sydney encountered italian light cruisers sinking battle cape ships escorted convoys ships mediterranean_fleet rest year hostile sunk struck italian august sunk italian submarine december assigned 13th supporting july joined griffin shortly ships escorted force battle september french forces hasty sank italian submarine october coast griffin sank italian submarine october griffin assigned 14th destroyer flotilla mediterranean_fleet hero participated inconclusive november 9th returned july september briefly transferred weeks response possible invasion operation sea lion returned end month sank october november 9th designated remained escort duty began lengthy griffin covering convoy malta january struck blew bow griffin rescued crew ship towed malta repairs estimated june declared total loss stripped equipment beached aerial attack april january sank italian submarine torpedoed ships convoy escorting months later sank italian submarine march griffin hasty participated march sunk german dive bombers months later crete suffered similar fate week later hero hasty participated evacuations greece crete ships supported allied forces syria june class ships joined griffin began escorting convoys alexandria july occasional convoys malta continued rest year hasty sank december returning surviving spent year convoy escort duties atlantic aside brief mediterranean convoy escorted participation raid july hurricane badly damaged german bomb took rest year repair transferred force december anti submarine defence sank january march class destroyers designated group leaders winter assigned escort force convoy damaged german bomber repairs rejoined half sisters north_atlantic december sank griffin transferred february hasty hero participated second battle march damaged repair malta damaged ordered gibraltar repairs safer environment whilst transit ran aground coast night april navigational error destroyed prevent capture destroyers hero sank reinforce escorts operation vigorous convoy alexandria malta june griffin temporarily recalled join sisters mission hasty torpedoed german boat scuttled june october hero shared credit sinking destroyers bomber squadron raf griffin arrived home month begin conversion escort destroyer remained north_atlantic december began escorting convoys gibraltar hero sent home converted escort destroyers early griffin hero transferred march november renamed ottawa respectively began escort duties conversion completed lasted october escorting convoy rammed march disabled process french corvette finished submarine following day sunk turn sunk sank april continued escort convoys north_atlantic january transferred hurricane remained convoy duties ship torpedoed december scuttled day transferred mediterranean april sank september began lengthy refit november barely finished working war ended ottawa escorting convoys north_atlantic transferred preparation operation overlord escorts convoy sank march ottawa sank german submarines corvette july august days later ottawa lengthy began late completed march patrolled end war ottawa returned north_atlantic refit finished february completed end war struck small april crushed underwater portion bow repair months assisted aircraft squadron raf sank april postwar surviving ships essentially obsolete worn war ended ottawa canadian troops home paid october ship sold scrap actually broken worst shape canadian destroyers paid august scrapped like sister transported food supplies dutch belgian towns immediately end war home_fleet reduced reserve august purchased november renamed training ship remained service sold dominican_republic renamed ship sold scrap escorted norwegian government exile norway served target ship broken late respectively like sisters served target ship repairs completed scrapped beginning
G and H-class destroyer