Turkey’s Cemre Shipyard has delivered Libas, the world’s first LNG-battery hybrid purse seine trawler, to Norwegian fishing group Liafjord
Built to DNV class and designed by the Norwegian naval architectural firm Salt Ship Design, Norway-flagged Libas has an overall length of 86.5 m, beam of 17.8 m and depth of 9.3 m, with a gross tonnage of 4,000. As a purse seiner, Libas is equipped for both double and single trawling, with a 2,830-m3 refrigerated seawater tank capacity to preserve large catches. Other equipment on board includes MacGregor electrical winches.
Notable is the vessel’s propulsion power, which is supplied by MAN 6L51/60DF dual-fuel engine that produces 6,000 kW at 514 rpm. The engine drives an Alpha propeller via a Renk marine gearbox. The fuel gas system supplied for the purse seiner covers a 350-m3 vacuum-insulated MAN Cyro Type C LNG tank, TCS/coldbox with process equipment, manifold and instrumentation, emergency shutdown system and bunker station for the supply of LNG fuel.
MAN Energy Solution’s uprated MAN L51/60DF engine successfully passed its type-approval test at the end of 2017, where a nine-cylinder test engine had an output of 1,150 kW/cylinder at a nominal speed of 500/514 rpm. The engine can be employed both as marine main engine and auxiliary engine and run on both fuel-oil and natural gas on the testbed.
In combination with the dual-fuel engine, the vessel can access 508 kW of battery power from the Corvus Orca Energy ESS, for peak shaving operations. Libas will have a service speed of 16.5 knots.
Building on its fishing vessel sector portfolio, MAN Energy Solutions announced it won the contract to supply two sets of MAN 12V175D-MEM Tier III main engines for two newbuilding live-fish carriers, currently under construction at the Cemre shipyard.
Designed by Salt Ship Design, one vessel is a 2,200-m3 live-fish carrier for Seivåg Shipping and the other, an 8,000-m3 live-fish carrier for Mowistar – the largest of its type in the world.
Seivåg Shipping’s live-fish carrier will have two MAN 12V175D-MEM Tier III engines, while Mowistar’s vessel will be powered by four MAN 12V175D-MEM Tier III engines.
Both fishing companies are subsidiaries of Norway’s Seistar.
Each engine will be equipped with MAN turbocharger, MAN SaCoS engine control and safety system, and selective catalytic reduction (SCR) closed-loop, temperature-controlled system that remains active over the entire load range, delivering low urea consumption and low emissions.
Discussing the engine orders, MAN Energy Solutions head of high-speed sales Ben Andres said “The aquaculture and fisheries market is currently experiencing significant growth and to make our debut by powering such a remarkable vessel – the world’s largest live-fish carrier – is very pleasing.” Added Mr Andres, “Norway has a high focus on emissions, particularly NOx and CO2, and the eco-friendliness of the MAN 175D and its SCR system prepares the vessels well for the impending IMO 2030 deadline.”
MAN Energy Solutions has developed the MAN 175D engine range in three variants – 12, 16 and 20 cylinders – with an output ranging from 1,500 to 4,400 kW. This maximum output makes the engine the most powerful high-speed engine in the market.
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