A study is made of high frequency (10 mc/sec) barium titanate transducers radiating into water, with band width and efficiency being of principal concern. Optimum electrical damping alone is considered; however, it is demonstrated that the introduction of an intermediate14 wavelengththick composite mechanical element results in superior performance. Of the units constructed, the best exhibited a frequency band width (half‐power points) of 44% with 4‐db midband loss (equivalent insertion loss on a 2 transducer basis). Focusing radiators, as well as plane, were tested.