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Marine Log

Twin Marine Lifter System

February 12, 2008

MAN Diesel gensets for SeaMetric TML ships

SeaMetric International AS, Stavanger, Norway has chosen MAN Diesel gensets to power its innovative TML (Twin Marine Lifter) ships.

SeaMetric's Twin Marine Lifter system is based on using two heavy lift vessels for installation and removal of very heavy objects like platform topside and jackets with weights up to 20,000 tonnes. The TML vessels will be capable of transporting very large construction sections, the world's jack-up drill rig fleet and the majority of semi-submersible drilling rigs as well as topsides modules and other major loads.

In December 2007, Seametric ordered a package of 24 MAN Diesel marine generating sets type 8L27/38 for four TML vessels, while a subsequent MOU covers future identical gensets to power planned newbuildings.

The gensets ordered (six sets for each vessel) will power a diesel-electrical propulsion and positioning system with four thrusters.

Two of the dynamically positioned (DP3 type) heavy transport vessels are 140 m long, with 40 m beam and have a dwt capacity of 25,000 tonnes, while two are 180 m long with same beam and have a dwt capacity of 35,000 tonnes. They will have accommodations for 41 persons, a helideck, and will be capable of submersion to -20 meters.

"By having a DP Class 3 heavy lift system and accommodation facilities, we will not be dependant on anchor handler vessels, tugs, daily helicopter shuttling and accommodation offshore, which will reduce the operational costs significantly," says Managing Director of SeaMetric International, Johan F. Andresen. " We will also be capable of secure operation in congested areas and above subsea pipelines. The flexibility of use of the base vessels in the heavy transport market will maximize our utilisation and therefore improve our potential profitability."

China's Liaohe Shipyard is scheduled to deliver the first vessels in the fourth quarter of 2009.

The gensets, which are of the classic MAN Diesel Holeby design with common baseframe for engine and alternator, will be supplied from the South Korean MAN Diesel licensee, STX Corporation during second and third quarter of 2009. The ships' genset package is specified as 6 x 8L27/38 -- in order to meet the special operating demands of each of the four newbuildings with accumulated genset outputs of 15,840 kW (21,500 BHP) mechanical power.


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