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 November 2013 Digital Edition
FREE Maritime Reporter Subscription
Latest Maritime News    rss feeds

Marine Propulsion

Equinox Class Scrubber Systems Receive Certification

Algoma Central Corporation (“Algoma”), the largest Canadian shipowner and operator of domestic Great Lakes vessels announces that it has received all requisite

Wärtsilä, Diesel United Renew Pact

Wärtsilä and Diesel United Ltd in Japan have signed a ten-year renewal of their co-operation agreement for the sale, manufacturing and servicing of Wärtsilä low-speed marine engines.

MARAD Tests Alternative Power for Ships

The Maritime Administration (MARAD) is testing state-of-the-art, environmentally efficient technology onboard the Training Ship (TS) Kennedy.   The National Defense

Vessels

Wärtsilä, Diesel United Renew Pact

Wärtsilä and Diesel United Ltd in Japan have signed a ten-year renewal of their co-operation agreement for the sale, manufacturing and servicing of Wärtsilä low-speed marine engines.

MARAD Tests Alternative Power for Ships

The Maritime Administration (MARAD) is testing state-of-the-art, environmentally efficient technology onboard the Training Ship (TS) Kennedy.   The National Defense

St. Lawrence Seaway Workers Extend Strike Deadline

The union that represents workers on the St. Lawrence Seaway, the waterway that links the Great Lakes and the Atlantic Ocean, has extended a strike deadline to Monday at 5 p.

Surveyors

Braemar Hosts Insurance Experts

Braemar (incorporating The Salvage Association) welcomed an invited group of marine insurance professionals onto its specialist port and shipyard familiarization

DEA’s New 82-foot Survey Vessel Commissioned

David Evans and Associates, Inc.’s Marine Services Division commissioned its new 82-foot hydrographic survey and scientific vessel Blake in a ceremony held in the vessel’s homeport of Gulfport,

EnQuest Selects Technip for Mega Subsea Contract

Technip was awarded by EnQuest earlier this year a large(1) engineering, procurement, installation and construction (EPCI) contract for the Kraken development located in the North Sea,

 
 
Maritime Contracts Naval Architecture Navigation Offshore Oil Pod Propulsion Ship Electronics Ship Repair Shipbuilding / Vessel Construction 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: 0.5261 sec (2 req/sec)