Abstract: A data acquisition system is provided for acquiring acoustic information from an array placed in a body of water and for transmitting the information through a single transmission line to remotely located data processing equipment. The array includes a plurality of sensors, a plurality of sub-multiplexers, a master multiplexer and an A/D converter. The sensors are arranged to receive acoustic signals from objects submerged in the water and each sensor provides an analog electrical signal representative of the acoustic signal received thereby. Each sub-multiplexer has a plurality of inputs and a single output with each of the inputs being connected to a corresponding one of the sensors. The sub-multiplexers sequentially sample signals received at their inputs from the sensors connected thereto and transmit these samples to a single output provided on each sub-multiplexer.