Smithsonian Report, 1959—Loening PLATE 6 
2 Se 
BOAT-SEAPLANES 
1, NC-4 Navy 4-engine seaplane, first to fly across the Atlantic Ocean, 1919, engine 
location between biplane wings; 2, Dornier DO—X transoceanic flyingboat, 1929, 
with 12 engines placed on top of the strut-braced monoplane wing; 3, Navy Consoli- 
dated ‘‘Coronado” type flyingboat, 1942, the general configuration in wide use in 
air transport as well as in the Navy from the mid-1930’s to the present time. 
