New positioning,depth sounding and seabed imaging technology has revolutionized hydrography in the past 15 years.Unfortunately,many government hydro-graphic offices may be unable to apply this technology to their entire area of responsibility because the resources available are limited and must be devoted to the regions of highest vessel traffic volume.However,high-resolution mapping equipment and techniques are now in widespread use throughout the academic research fleet,and many groups now have the ability to acquire high-quality bathymet-ric data.
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