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

Marine Propulsion

Firefighting Vessel Delivered to the US Army

New Orleans based maritime solutions company Technology Associates, Inc. (TAI) informs it has completed its contract for the design and construction of a fast response

Yanmar Diesel Engines for Fast New Crew Tender

The expansion of the number of wind turbines out at sea near the northern Dutch coast was reason enough for Ubels Offshore to expand its fleet with a fifth ship last year.

Hapag-Lloyd's New Noses Lower Emissions

Hamburg based shipping company Hapag-Lloyd plans for 24 of the largest containerships in its fleet to get new bulbous bows by 2016, with some of the vessels also

Vessels

Grimaldi Orders Three PCTCs

After signing an order for the construction of five new ships two weeks ago, the Italian shipowner  Grimaldi Group has signed another contract for the construction

Record Bulk Shipping Demolition Rates in 1H15

Monthly demolition rates in the dry bulk shipping sector averaged 3.3 million DWT for 1H15, according to new figures from BIMCO, compared to 1.3 million DWT last year.

Is It Too Late To Tangle With Spike in Shipping Market

A series of interesting and extreme price spikes is going on in the shipping market today, says Clarksons, provider of global shipping and offshore market intelligence.

Surveyors

New Imagery Allows Viewers to ‘Tour’ WWII Shipwrecks

High-tech underwater cameras help uncovering the secrets of HMAS Sydney   A recent expedition to survey historic World War II shipwrecks has produced a wealth

EU Funds Port Move

The Port of Cork has received almost EUR13 million in EU funds for the Euro100 million redevelopment of Ringaskiddy, as part of plans to modernize the port.   The

Polarcus Divests from Select Projects in Europe, Africa

Polarcus Limited announced it has signed a Letter of Intent (LOI) with TGS-NOPEC Geophysical Company ASA (TGS) for the sale of its multi-client projects in Northwest

 
 
Maritime Contracts Maritime Security Maritime Standards Naval Architecture Navigation Offshore Oil Pipelines Ship Repair Ship Simulators Sonar
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: 0.1392 sec (7 req/sec)