Minimum Audible Angles (MMA) for divers were determined for 3.5 kHz, 6.5 kHz, and broad‐band white‐noise pulses having a duration of 100 msec, a rise‐decay time of 10 sec, and a repetition rate of 1/sec. In Expt. 1 six divers performed the right‐left discrimination with no training or feedback and the mean MAAs obtained were 21.5° for the 3.5‐kHz signal, 14.5° for the 6.5‐kHz signal, and 9.8° for the white‐noise signal. In Expt. 2 four of the original six divers were given feedback from their performance with the white‐noise signal at a single small angle. The mean MAAs obtained after training were 11.3° at 3.5 kHz, 11.5° at 6.5 kHz, and 7.3° with white noise. It was concluded that if one assumes that the MAA reflects the general level at which the binaural system operates then it seems likely that man will be an effective sound navigator in the water.