class destroyer class group destroyers built royal_navy early 1930s previous years originally intended order complete flotilla comprising destroyers plus flotilla leader ninth unit year ships plus leader ordered programme class ships planned class ordered economy measure gesture labour government complete flotilla class ordered programme ships class assigned home_fleet completion reinforced mediterranean_fleet italian invasion enforced spanish civil war transferred spent time world war convoy escort duties atlantic_ocean crescent sunk accidentally rammed british cruiser hms calcutta sunk german submarine sunk italian submarine ships class sank german submarines war worn end war scrapped class destroyers initially assigned mediterranean_fleet commissioning transferred like class temporarily deployed red_sea italians invaded returned war began reinforced mediterranean fleet shortly ships transferred home_fleet december sunk route accidentally rammed battleship hms duncan badly damaged collided merchant ship requiring lengthy repairs daring sunk german submarine february participated april june delight sunk german aircraft july diana transferred replacement crescent sunk cruiser calcutta rammed sunk months later freighter escorting ships remained mediterranean_fleet sank italian submarines escorting malta convoys larger warships fleet participated year duncan joined october escorted group sunk german bombers february diamond april evacuating allied personnel greece defender scuttled july crippled german bomber returning escorting convoy duncan remained escort duties rest year transferred early returned late year begin conversions escort destroyers transferred early convoy escorts atlantic sank german submarines assigned protect allied shipping operation overlord sank submarines end war paid duncan scrapped design description ships based preceding class enlarged increase endurance allow inclusion inch cwt anti aircraft gun class introduced director control tower british destroyers class unique having split bridge compass platform separated director tower unusual layout repeated admiralty policy alternating speed destroyer sweep gear capability destroyer class lacked designed carry depth charges class repeats replaced storage depth charges class destroyers displaced long tons standard load long tons deep load ships overall length feet beam feet draught feet inches powered parsons geared steam turbines driving shafts developed total shaft horsepower gave maximum speed knots mph steam turbines provided admiralty drum water tube boilers operated pressure psi kpa cm2 temperature destroyers carried maximum long tons fuel oil gave range nautical miles knots mph complement officers men leader class displaced long tons destroyers carried extra personnel formed staff captain commanding officer flotilla unique class ships yarrow water tube boilers operated pressure psi kpa cm2 duncan leader class displaced long tons destroyers carried extra personnel ships class mounted calibre inch guns single mounts designated rear anti aircraft defence single inch cwt gun funnels class ships carried millimetre pounder guns mounted aft end forecastle deck class destroyers intended carry new inch machine gun quadruple bridge wings initially available old pounder guns retained daring diana diamond defender inch gun removed pounders relocated funnels platforms ships fitted water quadruple mount inch torpedoes main guns controlled control clock data derived director rangefinder capability anti aircraft fire anti aircraft guns aimed solely eye purchased canada class destroyers refitted meet canadian specifications including installation type clear modified turned october steam heating fitted wartime modifications beginning bank torpedo tubes removed replaced pounder gun mast funnel cut improve gun field fire cannons added surviving ships usually replacing pounder calibre machine gun mounts funnels pair added bridge wings pair mounted platform early war depth charge increased class class carried gun quarterdeck removed ships allow additional depth charge pounder ship gun replaced gun ships gun replaced anti submarine mortar duncan retained received split mounted gun ships received position mounted old pounder hotchkiss guns use boats close range ships director control tower rangefinder bridge removed exchange type target indication radar type short range surface search radar adapted royal_air_force radar added early models scan directly forward aimed turning entire ship ships received radio direction short mainmast ships service class assigned 2nd destroyer flotilla home fleet commissioning following italian invasion entire flotilla sent red_sea august monitor italian warship movements april refitted return deployed spanish waters spanish civil war intercept shipping carrying goods spain protect british ships crescent sold bought royal_navy turn auxiliary anti submarine ships commissioned replace world war started ships stationed british_columbia war began immediately recalled begin convoy escort duties following november sent caribbean local escort duties december assisted capture blockade runner march transferred late helped evacuate refugees france sunk june collision anti aircraft cruiser estuary assigned escort duties remaining ships spent rest war escorting convoys north_atlantic based canada ottawa assisted british destroyer sinking italian submarine november sunk german submarine september escorting convoy victory december credited sinking defending convoy destroyer frigates owen sound sank escorting august rammed sank sank submarine transferred protect shipping operation overlord followed july saw action german patrol boats poor shape time sent canada lengthy late remained canada completion early remained june ships transported canadian troops home day decommissioned late broken commissioning class formed 1st destroyer flotilla assigned mediterranean_fleet flotilla toured red_sea september november flotilla transferred arriving hong_kong january renumbered 8th destroyer flotilla flotilla sent red_sea italian invasion returned hong_kong remained world war began diamond midst refit lasted november rest flotilla immediately transferred mediterranean_fleet daring kept red_sea escort duties november rest flotilla patrol duties arrival needed repairs end year duncan delight daring transferred home_fleet december rammed sunk december battleship escorting duncan badly damaged collision merchant ship january repairs required months complete daring sunk german submarine february escorting convoy norway diana delight assigned convoy escort duties early participating april june attempting sail english channel daylight contrary orders delight sunk german aircraft july brief refit july august diana transferred replace sunk collision royal_navy cruiser recommissioned september renamed ship assigned convoy escort duties north_atlantic october sunk collision freighter remaining ships flotilla briefly assigned west_africa early escort convoys passing area search german commerce raiders recalled mediterranean april anticipation italian entry war defender sank italian submarines sinking destroyer june participated early following month diamond joined sisters late july ships escorted convoys ships mediterranean_fleet rest year duncan joined october participated inconclusive diamond defender november damaged aircraft earlier month repair february patrolling north african coast february destroyer hasty sunk german bombers duncan diamond defender continued provide escorts needed early duncan transferred march defender diamond evacuated allied troops greece crete april diamond sunk german aircraft april defender participated invasion french controlled syria lebanon june joined escorting convoys badly damaged returning missions ship attacked single german bomber july scuttled consort australian destroyer duncan rejoined force month escorted major convoys malta returning october lengthy refit damaged collision december repaired malta february transferred march escorting force japanese carriers attacked ceylon japanese spotted ship remained fleet ordered home september convert escort destroyer duncan refit completed january rejoined force escorted missions fly royal_air_force fighters aircraft carriers malta transferred april support operation ironclad invasion diego early recalled modified escort destroyer transferred march conversion recommissioned april new ship gifted canadians june working assigned escort group convoy escort duties north_atlantic april duncan joined escort group defending convoy october duncan destroyer squadron raf sank later month october duncan shared sinking corvette protecting convoy ships remained escort duty transferred preparation operation overlord duncan assigned conducting anti submarine operations rest war tasked protect allied shipping english channel ships sank english channel july august days later west brest lengthy refit canada october february returned assigned end war transported returning troops canada paid october sold scrap duncan paid sold july completely broken list ships second world war list ship classes second world war
C and D-class destroyer