Note 16 — VII
J. Ellis Barker translation
It was 150 horsepower in 1916. By the beginning of 1918 all modern German C-type machines had 260 h.p., and by April, 1918, German biplanes with 500 h.p. in one engine were beginning to appear. In consequence the extreme height (or "ceiling") of a C-type machine had risen from 12,000 feet to 20,000 feet.