JW Fishers, USA, has recently added a new low-frequency pinger to its line of acoustic devices. The new model has a significantly longer transmission range (3 to 6 miles compared...

Government agencies and marine service companies are finding a variety of uses for acoustic pingers and pinger receivers. Pingers are signaling devices that can be attached to an underwater site...

Knudsen Engineering have put their new 15kHz Pinger sub-bottom profiling system through its paces on Lake Champlain Vermont with the support of Middlebury College on their research vessel R/V Baldwin....

Teledyne Benthos, USA, has sold the Benthos aviation pinger product line, to RJE International, which includes the ELP-362D Underwater Locator Beacon. In this transaction, the Benthos intellectual property related to...

While nautical charting mainly focuses on bathymetry and objects that form a hazard to shipping, offshore construction and dredging require sub-bottom information. There is nothing worse in any project than...

Last week, the MH370 Safety Investigation Report was presented by the Ministery of Traffic of the Malaysian Government. On 8 March 2014, the  Malaysian Airlines aircraft went missing in the...

Although the number of aircraft lost at sea is not very high, over the past years a number of aircraft have suffered precisely that fate. With the recently renewed search...

COVER STORY: In 2016, a group of MBARI (Monterey Bay Aquarium Research Institute) scientists and engineers, led by geologist Charlie Paull, returned to the Beaufort Sea on the Canadian Coast...

Since the 1970s and the emergence of the first analogue systems, the sidescan sonar (SSS) has experienced several major revolutions. Signal digitization in the 1990s has significantly improved signal quality...

A mission to search for the wreckage of an Irish Coast Guard helicopter which crashed into the Atlantic earlier this year, killing all four crew members, was supported with underwater...