A.Jackson British Civil Aircraft since 1919 vol.3 (Putnam)

Supermarine Sea Lion I

  Single seat, wooden racing flying-boat, powered by one 450 h.p. Napier Lion driving a pusher airscrew, built at Woolston for the 1919 Schneider Trophy Race. One aircraft only: G-EALP, no c/n. piloted in the race, which was declared void through fog, 10.9.19 by Cdr. B. D. Hobbs. Struck flotsam and holed the hull when taking off from Swanage Bay after a precautionary landing and sank on alighting off Bournemouth Pier. Hull loaned to the Science Museum, South Kensington, 1921.
  Span, 35 ft. 0 in. Length, 24 ft. 0 in. A.U.W., 2,900 lb. Max. speed, 147 m.p.h.


Supermarine Sea Lion II

  Originally the single seat Sea King II amphibian scout powered by one 300 h.p. Hispano-Suiza, built at Woolston 1921. One aircraft only: G-EBAH, c/n 1154, registered to the manufacturers 16.12.21, first flown by H. C. Biard 3.22. Rebuilt as flying-boat with 450 h.p. Napier Lion, wings of reduced area and renamed Sea Lion II. Winner of the Schneider Trophy contest at Naples 10-12.8.22 piloted by H. C. Biard, who averaged 145-7 m.p.h. over the course of 200-2 nautical miles.
  Span, 32 ft. 0 in. Length, 24 ft. 9 in. Tare wt., 2,115 1b. A.U.W., 2,850 lb.


Supermarine Sea Lion III

  The Sea Lion II G-EBAH, rebuilt with two bay wings and increased rudder area for the 1923 Schneider Trophy Race at Cowes. Piloted by H. C. Biard, it averaged 151-16 m.p.h. to come third. Transferred to the R.A.F. 4.12.23 as N170.
  Span, 32 ft. 0 in. Length, 27 ft. 6 in. Tare wt., 2,400 lb. A.U.W., 3,275 lb. Max. speed, 155 m.p.h. Cruise, 125 m.p.h.

Журнал Flight

Flight, September 4, 1919.

THE JACQUES SCHNEIDER CUP RACE

The Machines

The Supermarine Flying-boat

  As it incorporates several new features, the flying-boat built by the Supermarine Aviation Co. is, up to the present, more or less of a "dark horse," and its makers do not wish any information published before the race. The machine is not, however, a freak built entirely for speed at any cost, and the makers are prepared to take it out in any sea that is likely to be encountered in that part of the world at this time of the year. It is a flying-boat more or less on the lines of previous Supermarine flying-boat scouts, and is fitted with a 450 h.p. Napier "Lion" engine. It is of interest to mention that this machine is capable of the evolutions of the small land scouts, such as looping, rolling, spinning, etc. It will be interesting to see how the seaworthy and necessarily heavier flying-boat will compare with the lighter-built float seaplanes.