MAN Propulsion to Power Seismic Vessel

MarineLink.com
Friday, June 28, 2013
Graphical rendering of the new seismic vessel (courtesy Skipsteknisk)

MAN Diesel & Turbo recently signed a contract for the supply of 8L32/44CR B.2 engines as part of a complete propulsion package to power a seismic vessel ordered by GC Rieber Shipping of Norway. The contract contains an option for an extra vessel. Four of the engines, along with two two-speed Flender Twin-In/Single-Out reduction gears and MAN Alpha Twin Screw CP propellers in AHT nozzles, will power the vessel. The seismic vessel is graded as Ice Class 1A*, which provides a good basis for operating in Arctic areas.

The vessel design is an ST 324 XT from Skipsteknisk of Aalesund, Norway whose hull will be constructed in Poland with outfitting subsequently carried out at the Myklebust shipyard north of Aalesund. The propulsion plant is scheduled for delivery by May 2014 with vessel delivery following in March 2015.

Expertise in ice has long been a GC Rieber Shipping trademark with an emphasis on delivering customer solutions for demanding operations in sensitive environments where quality, safety and environmental concerns are crucial. These tough requirements also apply to the propulsion plant and the shipyard's previous, positive experience with MAN Diesel & Turbo engines was decisive in finalizing the propulsion package.

Propulsion package
The four-stroke 8L32/44CR B.2 common-rail engines with a high-powered 600 kW/cylinder will be constructed and tested in Augsburg, Germany – headquarters of MAN Diesel & Turbo. The common-rail B.2 engine is one of the most advanced in the company’s product portfolio, has a second-to-none SFOC, and has gained a solid foothold in the offshore business.

The reduction gears from Siemens-Flender are specially designed such that – at constant engine speed (750 rpm) – two different propeller speeds can be selected (155 rpm or 120 rpm), allowing the propellers to have a much wider silent-operation window. The TI/SO gears are also provided with 2 × 2,600 kWe PTOs each.

The MAN Alpha VBS1100 Mk5 CP propellers utilise, courtesy of up to six operating modes, the flexible propeller-output speed to operate at the optimum efficiency in all modes. Suppressing cavitation on the propellers is an important design criterion since, especially on the pressure side, the noise deriving from cavitation can disturb seismic sonar readings.

The ø4200 CP propellers operate in Alpha High Thrust (AHT) nozzles, which further help to increase propeller performance by offering higher thrust at low vessel speed, and reduce cavitation noise through selection of the optimum nozzle L/D ratio.

The Alphatronic 2000 remote-control system facilitates the most favorable propulsion-plant control in all operating modes. A special feature of the new seismic vessel is an ‘ice operation mode’ since the DNV Ice 1A* only applies when one engine is engaged to each propeller shaft. The complete propulsion plant at 100% MCR is classed as fully MCR certified by DNV for operation in areas with no ice.

Finally, as part of the overall deal, MAN Diesel & Turbo will provide two years of online service and PrimeServLab (stringent quality control for engine operating fluids) on board in order to obtain valuable performance data for seismic high-load operation.
 

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

Marine Propulsion

MAN Propulsion Packages for New Icelandic Trawlers

MAN Diesel and Turbo inform that Icelandic owners, HB Grandi, Vinnslustodin hf. and Hradfrystihusid Gunnvör, have ordered newbuildings based on two different ship

World's Largest Fast Crew Boat Powered by HamiltonJets

The world’s largest Fast Crew Boat has recently been launched by Incat Tasmania’s shipyard on the 15th of September 2014.   This DP2 class 70m Fast Crew Boat

Mercury Marine produces 75,000th Verado L6 Outboard

Milestone comes less than 10 years after launch of platform.   Mercury Marine, the world leader in commercial and recreational marine propulsion and technology,

Vessels

Aker Evaluating Future of US Shipyard, ASC

Norway's Aker ASA may decide to merge or otherwise restructure two listed units that have seen strong benefits from the U.S. shale oil energy boom, Aker's Converto

Shipping's GHG Emissions Down

The total Green House Gas (GHG) emissions from global maritime transport are estimated to have been over 20% lower in 2012 than in 2007, according to "London Matters

300th Tug Brokered by Marcon Int'l

Marcon International, Inc. of Coupeville, Washington reported the sale of the U.S. flag, twin screw tug “Pacific Patriot” (ex-Pacific King) from Kirby Marine Offshore to U.

Surveyors

Ocean Installer Awarded New Contract

Ocean Installer has been awarded a contract for SURF support work in Brazil for Saipem. The contract which will see the Normand Clipper in Brazil for 8 months is valued at circa USD 50 million,

ABS Awarded DoD Classification Contract Modification

The US Department of Defense informs that the American Bureau of Shipping, Houston, Texas, is being issued an $8,500,000 modification under a previously awarded

NOAA Orders Newbuild Navigation Response Boats

NOAA today announced that Lake Assault Boats of Superior, Wisconsin, will build two small vessels for the Office of Coast Survey's navigation response program,

 
 
Maritime Security Maritime Standards Naval Architecture Navigation Offshore Oil Pipelines Salvage Ship Electronics Shipbuilding / Vessel Construction 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: 0.2358 sec (4 req/sec)