Seismic profiles were made near 27°N, 73°W, on the outer ridge with a 2‐kw broadband hydrostatic transducer as the sound source. This transducer is essentially an electrohydraulic positioning servo driving a 61‐cm‐diameter radiator and having a frequency response of from 50 to 450 cps. The transmissions were 1‐sec coded pulses, and a correlation receiver was used for pulse compression. The correlation functions were the polarity coincidence type. Magnetostrictive delay lines were used as the memories in the correlation receiver. On the outer ridge profile a good reflection at about 0.8‐sec sub‐bottom reflection time could be followed over the profile. The profile also shows reflectors at about 0.2‐sec sub‐bottom reflection time and occasionally shows an irregular reflection from an interface at about 1.5‐sec sub‐bottom reflection time.