A single-engine biplane floatplane, it flew in July 1914 but proved unable to lift the design load and was soon abandoned.
In February 1914, before trials of the Type TT had begun, this contract was extended to include a second, flying, experimental torpedo carrying seaplane.
[1] The Special was a four-bay biplane, with square-tipped, constant-chord, unequal-span wings connected by pairs of parallel interplane struts.
The 200 hp (150 kW) Salmson 2M7 water-cooled radial engine was placed just in front of the forward cockpit, close to the wing leading edge, with tall radiators on either side of the fuselage.
[1] In the meantime, a modified Short Admiralty Type 81 (S.84, RNAS serial 121) had become the first British aircraft to drop a torpedo, on 27 July 1914.