Sonardyne helps major scientific discovery on the Mid-Atlantic Ridge

Monday, August 15, 2011
A Sonardyne Wideband Mini-Transponder was installed on the Holland 1 ROV and also on its tether management system.

 
Sonardyne International’s Ranger 2 USBL (Ultra-Short BaseLine) acoustic positioning technology has played a crucial role in a scientific mission to discover a new eco system on the floor of the Atlantic Ocean. The Irish led VENTuRE expedition used the Ranger 2 equipment to track the Remotely Operated Vehicle (ROV) Holland 1 over three kilometres below the sea surface as it searched for and filmed evidence of the newly named Moytirra Vent Field.
 
The mission to find and study the deep sea vent field on the mid Atlantic Ridge was undertaken from the Irish research vessel, RV Celtic Explorer.  The deep rated ROV Holland 1 was required to operate in the challenging conditions created by hydrothermal vents.  These vents occur where cracks in the Earth’s crust allow sea water to penetrate downwards into areas of subterranean volcanic activity.  The seawater is not only heated to boiling point, but also permeated with dissolved minerals and suspended solids from the molten rock. This heated seawater then gushes back upwards into the ocean giving rise to what looks like miniature erupting volcanoes.
 
 “On the first dive, we found the edge of the vent field within two hours of arriving on the seafloor,” said Dr Andy Wheeler, who led the expedition. “The ROV descended a seemingly bottomless underwater cliff into the abyss. We never reached the bottom, but rising up from below were these chimneys of metal sulphides belching black plumes of mineral-rich superheated water. Often the search for vents takes much longer, and our success is a testament to the excellent equipment on board and the hard work and skill of everyone involved.”   
 
Because of the extreme depth and the importance of monitoring the precise location of the ROV as it navigated the difficult conditions, the research team selected Sonardyne’s Ranger 2 acoustic positioning technology.  This system is specifically designed for deep water, long range tracking of underwater vehicles and is widely used throughout the offshore oil, ocean science and marine survey industries.
 
Sonardyne’s engineers fitted Holland 1 with a high power acoustic transponder that communicates with a transceiver mounted onboard the RV Celtic Explorer.  From this, the system is able to calculate the range and bearing of the underwater target with great precision.  Ranger 2 incorporates the latest Wideband 2 signal technology which allows the vehicle’s real time position to be accurately monitored despite the noise pollution generated by the hydrothermal vent plumes.
 
Dr Bramley Murton of the National Oceanography Centre in the UK, who first saw clues for possible vents on an expedition aboard the UK research vessel RRS James Cook in 2008 said:  “The sense of awe at what we are seeing does not fade, and now we are working hard to understand what our discovery tells us about how our planet works.”

 

Maritime Reporter August 2015 Digital Edition
FREE Maritime Reporter Subscription
Latest Maritime News    rss feeds

People & Company News

IMO’s Sekimizu Condemns People Smugglers

Prompted by recent incidents in which hundreds of migrants attempting to cross the Mediterranean to Europe have lost their lives, including dozens found dead in

Glosten Acquires Noise Control Engineering

Noise Control Engineering LLC (NCE), a consulting firm for ship noise and vibration control, has become a wholly owned subsidiary of Glosten, Inc. a Seattle-based

Total Lubmarine Resumes Full Service in Tianjin

Marine lubricants and greases provider Total Lubmarine informs it has resumed all services based out of the Port of Tianjin following the deadly explosions that rocked the port August 12.

Technology

LNG-fueled Box Ship a 'Momentous Step Forward'

On Saturday, August 29, 2015, the world’s first series of energy efficient containerships welcomed its second LNG-powered vessel in San Diego, fueling the U.S.

MarineCFO Unveils Endurance Software

Capitalizing on its 2013 acquisition by software firm VerticaLive, MarineCFO has announced a Fall 2015 introduction of Endurance, a cloud version of the MarineCFO Enterprise Solution.

Nominations Invited for BIMCO Awards

BIMCO, the world’s largest international shipping association is now calling for nominations for its prestigious awards, to be presented in Hamburg in November 2015.

Education/Training

Nominations Invited for BIMCO Awards

BIMCO, the world’s largest international shipping association is now calling for nominations for its prestigious awards, to be presented in Hamburg in November 2015.

Eniram Expands Training Services, Onboard and Onshore

Eniram Ltd, a provider of energy management technology and analytic services to the shipping industry, today announced the addition of in-depth training services

The Maritime Person of the Year

The Massachusetts Maritime Academy’s annual salute to ‘the person of the year’ this year spotlights McAllister Towing and Transportation Co. and its leadership team.

Marine Equipment

Total Lubmarine Resumes Full Service in Tianjin

Marine lubricants and greases provider Total Lubmarine informs it has resumed all services based out of the Port of Tianjin following the deadly explosions that rocked the port August 12.

Polymer Serves an Array of Workboat Applications

Workboats are built for a diverse range of purposes, but they all share the need for trouble-free bushings and bearings. Answering this call, Vesconite offers a line of low-friction,

Tankers to Require Stability Instruments Starting 2016

Lloyd's Register informs that new stability instrument requirements will apply to all tankers constructed (keel laid) on or after January 1, 2016. These ships will

Marine Science

Obama Pushes for U.S. Icebreakers

President Barack Obama on Tuesday will propose a faster timetable for buying a new heavy icebreaker for the U.S. Arctic, where quickly melting sea ice has spurred more maritime traffic,

Shipboard Waste Heat Recovery Technology

Calnetix Technologies, LLC has published a White Paper describing new processes for producing supplemental power for a ship’s electrical load. The White Paper,

Hurricane Fred Strengthens in Eastern Atlantic

Hurricane Fred strengthened early Monday in the eastern Atlantic as it approached the Cape Verde Islands, while the remnants of Tropical Storm Erika brought flooding to parts of South Carolina,

 
 
Maritime Contracts Maritime Security Maritime Standards Offshore Oil Pod Propulsion Salvage Ship Repair Ship Simulators Shipbuilding / Vessel Construction Winch
rss | archive | history | articles | privacy | 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: 0.5488 sec (2 req/sec)