It is hard to imagine today that there was once a time when no side scan or multi-beam sonar existed to cover the entire sea bottom. Even after the echo...

Among XVII century astronomers, Halley (of 'comet' fame) was unique in his attraction to working at sea. Nobody quite knows how he acquired his training in seamanship, but from 1698...

After working for eighteen years with the trailer department of a dredging company, Stef Mars started his own hydrographic survey company in 1985. Working on board of hopper trailer suction...

Gardline has been undertaking hydrographic surveys in the north west of Europe and all over the world since 1974. Large-area nautical charting surveys to UKHO standards have been regularly undertaken...

In early 2001, BP Exploration and Production, and Shell International and Production contracted C&C Technologies Inc. to conduct a marine survey for the proposed Okeanos Gas Pipeline route, using their...

Sonar is well accepted as an option for detection and visualisation of underwater objects. Side-scan and sector-scanning sonar have traditionally been used by surveyors but whilst they produce excellent images,...

Manned and unmanned underwater vehicles have been used for many years to explore the hidden features of the deep ocean. Dr Robert D. Ballard is an oceanographer most noted for...

Marine Sampling Holland bv is a new company that was formed on 1 November 2007. The company owns advanced coring and drilling equipment, has personnel with long experience, and is...

Hydrography is to many in our profession an unfamiliar word. When in my early days explaining what my job comprised I used to extrapolate it from ‘hydro’ and ‘graphy’, the...

Tides and currents are giving hydrography an extra (some say challenging) aspect, which has to be accounted for. If you are measuring ‘absolute’ water depths, as do surveyors for nautical...