Complex sentence: The N2M-1 was based on the Martin 66 Night Mail and was a biplane powered by a Wright-Hisso E- 4 engine, it had two open cockpits in tandem for a crew of two.
Split into simpler sentences: The N2M-1 was based on the Martin 66 Night Mail and was a biplane powered by a Wright-Hisso E- 4 engine. It had two open cockpits in tandem for a crew of two.