Both thin-section wings were rectangular in plan out to blunted tips, with outboard ailerons vertically interconnected by a streamlined linking strut.
Its wingtip floats had completely enclosed streamlined mountings below the outer wings.
Its longer forward fuselage allowed a raised enclosed cabin with four windows on each side, seating either four or eight passengers.
The tail was very similar to that of the V 8a, all its surfaces rectangular apart from a little rounding of the upper leading edge of the fin, which carried a balanced rudder.
[1] In July 1921 LFG reported that they had built two V 18s, one metal and the other wood, and that these were now stored following Allied restrictions on German aircraft construction after World War I.