sister ship originally built coastal defence ships respectively norway beginning world war completed launched years earlier september gone action suffered large fire inch magazines scuttled prevent explosion main magazines devastated dover wreck partially salvaged moved position northeastern end harbour traffic subsequently buried underneath current car ferry terminal background ordered norway supplement older class class classes coastal defense ships known norway stands armoured ship old norwegian city bergen world war broke royal_navy warships construction britain foreign powers thirds purchase price paid construction description laid launched august renamed earlier monitor completion greatly delayed modifications british included modifying boilers use oil coal conversion double tanks carry oil work began january suspended following estimated months work remained allow faster progress large light cruisers building armstrong naval yard september work resumed new design added large anti torpedo hull length suppression torpedo tubes millimetre guns planned large mast fitted single funnel carry directors inch inch guns guns use standard british ammunition mount inch gun modified maximum elevation gave gun maximum range yards addition cost knots mph speed prevented extra weight resulting changes deepening draft finally completed september displaced long tons deep load built length beam feet inches maximum main hull beam feet draught feet inches powered vertical triple expansion steam engines developed total indicated horsepower yarrow boilers gave maximum speed knots mph armed inch guns arranged single gun turrets fore aft secondary armament consisted inch guns single gun turrets inch turrets positioned superstructure anti aircraft gun mounted center line inch turret carried pounder pounder guns high angle mounts fate completion sailed dover september prepare offensive planned later month evening september inch magazine low order explosion ignited stored flames shot roof turret starboard started spread aft ship captain commander ordered forward magazines flooded crew unable flood rear magazines flames blocked access magazine flooding controls presence ammunition ship yards away massive explosion dover rear magazine exploded set ammunition vice admiral walking commander magazine exploded boarded recently arrived destroyer danger ordered torpedo attempt flood magazine detonated inch torpedo struck anti torpedo amidships failed explode fired close second torpedo blew hole torpedo pound small penetrate remained afloat burning transferred destroyer ordered fire inch torpedoes aimed hole blown starboard second torpedo succeeded causing masts superstructure rested harbour fire casualties heavy men killed outright injured later died burns inquiry held immediately found explosion occurred inch magazine situated boiler engine rooms cause difficult establish court note habit red hot ashes boilers bulkhead directly adjoining magazine cool sent ash magazine inches covered wood inches thick provided special cooling equipment likely spontaneously magazine sister ship emptied examined red lead paint bulkhead beneath tests demonstrated subject temperatures recorded temperatures inside magazine exceed test red hot ashes inconclusive temperature reached occasional hot spots tests reveal high heat air entirely satisfied conclusion found april slow inch magazine led magazine caused explosion precaution stripped replaced wool revealing real cause missing folded newspapers found space left dockyard workers construction furthermore number entirely missing meant inches holes present allowed hot ashes newspapers forced draught pressure boiler room supplied air holes causing gases eventually charges aftermath remained dover harbour shipping hull visible low tide afford quoted average salvage companies finally asked captain estimated cost granted use salvage craft dover board accepted offer work began short tons removed underneath mainmast superstructure away wreck lifting capacity long tons hired lift water logged long tons ship necessary seal holes pump air compartment rate cubic feet minute restore attempt lift began december successful breaking holding combination rising tide try major lifting effort began following day slowly moved taking advantage tides march moved deep western pier submarine harbour close shore total cost considerably originally estimated far quoted salvage companies remains buried underneath current car ferry terminal memorial memorial erected church road cemetery kent site largely cleared memorials provide community open space local population woodlands road cemetery site graves officer men
HMS Glatton (1914)