 The first true production Zeppelin-Staaken Riesenflugzeug was the R.VI.This giant aircraft was powered either by four 245hp (183KW) Maybach MbIV engines or four 260hp(194KW) Mercedes D.IVa engines.The fuselage was similar to the previous aircraft but the cockpit was extended forwards, enclosed and glazed with a gunners cockpit in the extreme nose.