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Underwater acoustic communications. D. Porta. Sea Technol., February 1998, 39(2), 49, 51--55.

Attention is drawn to the way in which government investment in research has fuelled rapid advances in implementing remote acoustic communications technology for better performance and lower costs. A typical example of Datasonics acoustic modem use being the remote monitoring of internal gas piepline corrosion---North Sea Troll platform. 5 refs.
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