Norman Thompson N.T.4

Inspired by the Curtiss H-4, the Norman Thompson N.T.4 had similar lines but integrated the glass-enclosed cabin directly into the hull structure. The initial batch was powered by a pair of 150hp Hispano-Suiza vee-eights, but later runs used the 200hp geared engines shared with the R.A.F. S.E.5a, and in this form it was re-designated the Norman Thompson N.T.4a.

The plane had good performance and was used for both patrol and training, but it was overshadowed by the Curtiss H-12 and Felixstowe F.2A.