Aberdeen-based Nautronix enhanced the functionality of the Nautronix NASDrill USBL acoustic positioning systems by incorporating a new transducer design. The company used its acoustic digital spread spectrum (ADS2) signaling technology to house the hydrophone within a ruggedized, non-corrosive, pvc material. This eliminates most water corrosion issues. The hydrophone is also more compact and lighter in weight, and employs an identical mounting flange so it can directly replace existing hydrophone models on existing deployment poles and methods.