german aircraft carrier aircraft carrier proposed conversion project incomplete french cruiser ship laid november lay incomplete arsenal shipyard germany invaded france nazi_germany kriegsmarine decided convert cruiser auxiliary aircraft carrier capacity fighters dive bombers work ceased february concerns ship design severe shortage material labor threat allied bombing raids ship eventually completed anti aircraft cruiser french_navy design french cruiser laid arsenal shipyard november work unfinished ship stopped following german conquest france kriegsmarine considered proposals convert cruiser auxiliary aircraft carrier final proposal completed august work conversion long february project abandoned reasons shipyard suffered shortage labor materials design staff significant concerns arrangement engine system allies posed threat range allied bombers ship eventually french_navy end war launched ultimately completed anti aircraft cruiser characteristics converted ship meters long waterline long overall beam draft designed designed displacement long tons ship propulsion system consisted sets geared steam turbines steam supplied ultra high pressure boilers engines rated shaft horsepower provided speed knots mph carrier range nautical miles cruising speed mph converted ship armed anti aircraft guns heavy anti aircraft battery consisted guns twin mounts type originally designed earlier guns mounting stabilized capable enabled guns engage targets ceiling surface targets guns maximum range guns fired fixed ammunition weighing guns fire rounds illumination shells close range anti aircraft weaponry consisted guns guns gun single shot gun rate fire rounds minute maximum elevation gun ceiling gun magazine fed automatic weapon firing rounds minute round magazines supplied guns ship aircraft facilities consisted long wide flight deck elevators aircraft handled single hangar long wide ship air complement consisted fighters dive bombers fighters version model designated wings longer land based model allow shorter variant version modified catapult launches equipped arresting gear
German aircraft carrier II