TECH NOTESNV GL announced the comple- dai Heavy Industries (HHI) and GasLog. tion of the LNGreen joint in- The vessel concept is designed to deliver LNGreen dustry project, which worked an improved environmental footprint, a DNext-generation LNG to develop a next-generation LNG car- higher level of energy ef? ciency, as well rier. The LNGreen joint industry project as an improved boil-off rate and cargo Carrier Concept brought together DNV GL, GTT, Hyun- capacity, making it much better suited to future trading patterns than existing vessels.Baltimore’s Full ServiceLNGreen investigated the improve-ment of ef? ciency and performance of Ship Repair YardLNG carriers by considering actual op-erational conditions and optimization ?6HUYLFH$Q\ZKHUHLQWKH3RUWin terms of hydrodynamics, machinery and system con? guration. These devel-?$URXQGWKH&ORFN6HUYLFHopments were based on DNV GL’s in-?'U\'RFNDQG:HW%HUWK6HUYLFHVDWRXU.H\tegrated systems engineering approach +LJKZD\/RFDWLRQCOSSMOS, computational ? uid dynam-ics (CFD) calculations, and a contain-?)ORDWLQJ(TXLSPHQWWRment system design, tailored to a spe-6HUYLFH9HVVHOVDW&DUJR3LHUVci? c operational pro? le and anticipated trades. HHI and DNV GL carried out the hy-“A Baltimore Tradition with Over Ninety Years in the Same Location”drodynamic performance evaluation by comparing CFD simulations. Different The General Ship Repair CorporationCFD codes were applied for the com-1449 Key Highwayparison of resistance and self-propulsion Baltimore, MD 21230performance but different scale effects were also considered. PHONE:?FAX: 410-752-4650Cargo containment optimization was EMAIL: info@generalshiprepair.cominvestigated by GTT and HHI. The tank shape, necessary reinforcements and MOBILE 24 HOUR SERVICES FOR:boil off rate calculations, were exam-EMERGENCY/ MAINTENANCEined to develop alternative cargo tank FIELD & SHOP REPAIRSdesigns that could yield additional cargo MACHINE SHOP/ FABRICATIONScapacity. With a starting design point of 174,000 cu. m. cargo capacity, cargo tank optimization by GTT and HHI al-lowed for a cargo capacity increase to 182,800 cu. m., while maintaining the same main dimensions (length overall, breadth, draft) and taking into consider-ation newly introduced regulations and compatibility restrictions.LNGreen74 Maritime Reporter & Engineering News • AUGUST 2015MR #8 (74-81).indd 74 MR #8 (74-81).indd 74 8/10/2015 12:55:19 PM8/10/2015 12:55:19 PM