On 9th December 1942 Wolfgang Hutter presented a concept for a two/three-seat twin-engined long-range Zerstorer designated ‘Ostermark’. Construction was to be all-metal and the proposed powerplants were for DB 601A-1s installed side-by-side mid fuselage, each engine driving a set of contra-rotating four-blade propellers via extension shafts. This enabled one engine to continue operating while the other was shut down. Six fuel tanks housed in the fuselage provided a range of 3,000 km. Armaments included a Bordkanone firing through the propeller boss and a rear firing remote controlled cannon in the tail. The bomb load carried internally was 1,000 kg or alternatively a BT1000 Bomb-torpedo.