class cruiser class cruisers class light cruisers planned built nazi_germany ships designed commerce raiding atlantic_ocean design ships suffered number problems fifth sixth ships substantially redesigned class taken letter designating projected unit long ships named referred letters assigned chronological order planned construction planned unit thirteenth german cruiser listed cruiser navy documents ships built class named completed unit development cancellation class intended use scout commerce raiding squadrons envisioned ships design process started ships intended long range commerce raiding improvement previous designs suffered insufficient range effective commerce raiders requirements placed design high maximum cruising speeds long range heavy armament armor sufficient withstand shells displacement metric tons deemed impossible design staff july der marine commander chief navy requested proposals naval design staff private designs practical official design met requirements chosen development design flaws apparent including weakness main battery anti aircraft armament thick armor protection stepped arrangement deck armor wasted space impractical layout propulsion system problematic turbines engine room vulnerable damaged crew spaces insufficient long range cruises result design heavily modified ships class initial design borrowed contemporary british french ships southampton class class respectively distribution class ships armor obvious influence southampton class design contract assigned kiel construction number followed wilhelmshaven number construction number assigned kiel august contract transferred assigned number assigned danzig contract awarded laid construction halted september respectively hulls broken stocks shortly design general characteristics class ships meters long waterline meters long overall beam meters draft meters standard meters forward meters aft ships designed displacement metric tons displaced tons standard load tons fully laden ships crew officers men designed carry picket boat barge launch ships enlarged versions meters long waterline overall beams meter wider meters ships draft lower meters ships designed displace tons displaced tons standard ships steel construction design called watertight compartments double length hull ships intended use sets wagner turbines marine type turbines built man double acting cylinder stroke equipped additional total turbines powered wagner ultra high pressure boilers designed pressure propulsion system drove screws considered ships electrical power supplied generators produced volts armament armor ships armed set weaponry primary armament consisted quick firing guns mounted twin turrets superfiring pairs fore aft guns total shells rounds gun twin turrets mounts type fitted class battleships number designs turrets allowed depression degrees elevation degrees enabled maximum range guns rate fire rounds minute muzzle velocity meters second guns charges fore charge main charge brass cartridge ships carried anti aircraft guns twin turrets aft main superstructure guns supplied shells rounds gun guns fired high explosive shells rate fire rounds minute muzzle velocity guns elevate degrees allowed hit targets flying class ships equipped guns twin mounts centered superstructure total shells anti aircraft weaponry supplemented guns rounds ships armed deck mounted torpedo tubes approximately mines ships protected krupp hart hard armor plating class decks thick thick sloped deck conning tower roof thick sides thick inner layer armor belt thick critical areas amidships tapered zero protection stern bow outer layer amidships tapered ends ships gun turrets armor protection preceding light cruiser sides thick faces thick roofs ranged thickness armor protecting turret barbettes thick
M-class cruiser