Ifremer Receives Scientific Multibeam

Posted by Irina Tabakina
Wednesday, June 04, 2014

Delegates from the French Research Institute for Exploration of the Sea (Ifremer) visited the Kongsberg Maritime Subsea headquarters in Horten, Norway late December 2013 for the Factory Acceptance Test of its second Simrad ME70 scientific multibeam echosounder. Ifremer acquired the multibeam echo sounder – the Simrad ME70 delivered as part of the mid-life refit of the L’Europe Research Vessel – to strengthen its work in the Mediterranean Sea. Sea trials on the refit vessel are planned for March 2014.
The delivery completes the already installed Simrad EK60 scientific single beam echosounder system to create a standardized package that combines quantitative single beam and multibeam systems for vessels that carry out biological surveys. Ifremer has also chosen the ME70 bathymetric module, enabling the ME70 to perform seabed mapping according to international standards while at the same time doing ecosystem surveys of the water column.
The Simrad ME70 has a built in calibration functionality in the software, made possible because the ME70 utilizes split beams in all beams. A calibration sphere with known target strength is used to calibrate the entire system, allowing the user to obtain absolute backscatter values from ecosystem components such as plankton, fish or bottom habitat. Calibrated backscatter data are also relevant for bottom classification, as backscatter levels can be compared on the same scale.
Also the Simrad ME70 offers its fully populated element array in both alongship and athwartship direction. A total of 800 individual elements in the transducer are used to form up to 45 split beams spread out in a fan in the athwartship direction. As individual beams are formed in both transmission and reception, two way side lobe suppression give side lobe levels lower than -35 dB. Coupled with Frequency Rotated Directional Transmission (FRDT), where operating frequency is shifted between the beams to avoid interleakage, the ME70 is designed to allow the user to measure weak targets close to strong ones, which is essential when your goal is to map the entire marine ecosystem.
“The ME70 has added another dimension to our biological surveys on board the R/V Thalassa as it addresses some of the physical shortcomings of quantitative single beam echo sounders such as low resolution and sampling volume. It has been many years since we started using the ME70 on Thalassa, but we have now come to a point where we standardize the combination of quantitative multibeam and multifrequency single beam systems on board our vessels that carry out biological survey and research,” adds Laurent Berger, fishery acoustician at Ifremer.
 

(As published in the May 2014 edition of Marine Technology Reporter - http://www.marinetechnologynews.com/Magazine)

Maritime Reporter November 2014 Digital Edition
FREE Maritime Reporter Subscription
Latest Maritime News    rss feeds

Technology

Liquefaction Terminals to Dominate LNG Capital Expenditure

Capital expenditure (Capex) on global LNG facilities is expected to total $259 billion (bn) over the period 2015-2019, with investments expected to be 88% larger

Ennsub Delivers ROV Deployment Systems

Ennsub has completed the design and manufacture of two workclass remotely operated vehicle (WROV) deployment systems for ROVOP, due to be installed into a newbuild

Wärtsilä to Proceed with first LNG Terminal

Wärtsilä has been given full notice to proceed (NTP) from Manga LNG Oy for the supply of a liquefied natural gas (LNG) import terminal in Tornio, Northern Finland.

New Products

Nordic Yards Delivers 'Wind Server'

Nordic Yards officially handed over the offshore service vessel to the Danish company DBB Jack-Up Services A/S. During the handover ceremony, the ship was named ‘WIND SERVER’.

NRL Researchers Demo Ship-to-Shore Data Link

Scientists at the U.S. Naval Research Laboratory (NRL) along with Mercury Continuity (MC) have demonstrated the Tactical Reachback Extended Communications (TREC) system in the port of Miami.

NASSCO Opens Bremerton Repair Facility

General Dynamics NASSCO celebrated the grand opening of its new location in Bremerton, Wash., yesterday. The facility will support the company’s recently-awarded contract to repair and maintain U.

Marine Equipment

Maritime Reporter @ 75: The Daily Cartoon

Maritime Reporter & Engineering News was founded by John J. O'Malley (1905-1980) in 1939, and today ranks as the world's largest audited trade publication in the world serving the maritime industry,

Keeping to the Schedule in the Pacific Northwest

When a tightly scheduled repower for the Kodiak-based trawler Sea Mac in early December took a very bad turn, Mike Fourtner used his 25 years of fishing experience

Damen Outfitting First of Nine Bahamas Patrol Boats

The first of nine Damen Stan Patrol 3007s ordered by the Royal Bahamas Defense Force has arrived at Damen Shipyards Gorinchem in the Netherlands for outfitting.

Marine Science

NOAA: US to See More Floods from Sea Level Rise

Most of U.S. coast may see 30 or more days a year of floods up to 2 feet above high tides. By 2050, a majority of U.S. coastal areas are likely to be threatened

Damen Shipyards Galati wins Dutch Romanian Award

Damen Shipyards Galati has been presented with the Dutch Romanian Business Award for its Corporate Social Responsibility plan, particularly the Group’s community investment initiatives.

Lowrance Renews Insight Genesis College Cup

Lowrance®, a world-leading brand in fishing electronics since 1957— announced today the renewal of its Insight Genesis™ College Cup. In its second year, the

Ocean Observation

NOAA: US to See More Floods from Sea Level Rise

Most of U.S. coast may see 30 or more days a year of floods up to 2 feet above high tides. By 2050, a majority of U.S. coastal areas are likely to be threatened

DYT Yacht Transport Carries M/V OCEARCH

The 126-foot research vessel M/V OCEARCH is currently making its way from Port Everglades, Florida to Brisbane, Australia on board DYT Yacht Transport’s semisubmersible

Talisman Sinopec Closes North Sea Platform Ahead of Storm

Talisman Sinopec Energy UK has closed its Buchan Alpha platform in the North Sea, the company said on Wednesday, ahead of an expected severe winter storm. The

 
 
Maritime Careers / Shipboard Positions Maritime Contracts Maritime Security Offshore Oil Pipelines Port Authority Salvage Ship Electronics Sonar Winch
rss | archive | history | articles | privacy | terms and conditions | contributors | top maritime news | about us | copyright | maritime magazines
maritime security news | shipbuilding news | maritime industry | shipping news | maritime reporting | workboats news | ship design | maritime business

Time taken: 0.1568 sec (6 req/sec)