The next-generation LNG carrier concept, developed jointly by DNV GL, HHI, GTT and GasLog, named the LNGreen, has been completed, said DNV GL in a press release.
The vessel concept has a significantly improved environmental footprint, a higher level of energy efficiency, as well as an improved boil-off rate and cargo capacity, making it much better suited to future trading patterns than existing vessels, DNV GL added.
LNGreen investigated the improvement of efficiency and performance of LNG carriers by considering actual operational conditions and optimisation in terms of hydrodynamics, machinery and system configuration.
Martin Davies, the Project Manager at DNV GL stated that “using enabling computer tools we managed to develop a vessel which is approximately 8% more energy efficient and has increased its cargo volume capacity by 5%. The design is future compliant with new IGC code, Panama requirements as well as significant advances in a range of features, including the speed-range flexibility, hull form and boil-off rate”.
HHI and DNV GL carried out the hydrodynamic performance while cargo optimisation was investigated by GTT and HHI.
With a starting design point of 174,000m3 cargo capacity, cargo tank optimisation by GTT and HHI allowed for a cargo capacity increase to 182,800m3, while maintaining the same main dimensions (length overall, breadth, draft) and taking into consideration newly introduced regulations and compatibility restrictions.
Nikolaos Kakalis, Manager of DNV GL Research & Development in Greece and responsible for COSSMOS development commented that “fusing unique competencies of key experts from across the industry, like HHI, GTT, and GasLog, with advanced tools like the COSSMOS machinery systems simulation and optimisation computer platform as well as state-of-the-art hull optimisation software, we bring innovation in practice that can generate tangible added value. As LNGreen utilizes existing technology it is important to stress that this concept design could be ordered today”.
Image: DNV GL