With the Do.14, Dornier used basic the formula of their successful “Wal” series to build a “cleaner” and more modern seaplane in 1936. Apart of its more aerodynamic shape the main characteristic of the Do.14 was its engine installation. Instead of the twin engined tandem layout above its wing, Dornier placed the two engines inside the fuselage. Those engines were situated facing each other and connected to a gearbox that drove the pusher propeller through a vertical shaft. The aircraft flew without any serious problems, yet only one was built, Technology advances had made this engine formula obsolete.