Rumpler 4B12

About 20 or 30 Rumpler 4B12 seaplanes were built and used for patrol during 1915. They were based on the earlier Rumpler 4B11, but they mounted the more powerful 150hp Benz Bz.III engine.

Orders and deliveries arrived in small batches from April 1915 through March 1916. The 4B12 was used in the North Sea and the Baltic. It served until the summer of 1916, at which time it moved to training duties.