Safety, redundancy drive new LNG bunker vessel concept

摘要

Class society Bureau Veritas Marine & Offshore has granted approval in principle (AIP) to a concept design for a dynamic positioning (DP) class 2 capable 19,000 m~3 LNG bunkering vessel with membrane tank technology. Bureau Veritas (BV) made the presentation of the AIP at Marintec in Shanghai in December. Developed by Hong Kong-based technical consultancy Marrinov with engineering support from ship designer Marine Assistance, the dual-fuel LNG bunkering vessel (LNGBV) is called Quadelprop, reflecting its high manoeuvrability facilitated by four azimuth thrusters fitted at each corner of its hull. Four dual-fuel generator sets and an energy storage system (ESS) provide power to the LNGBV and its electric thruster motors. During refueling operations, Quadelprop's DP system allows it to maintain position relative to the client ship, ensuring that the LNG transfer system is always within a safe working envelope. Using its DP system, Quadelprop can perform ship-to-ship LNG bunkering operations at anchorage and in designated waiting areas, simplifying and speeding the refuelling. The LNGBV's DP system will also make it easier to quickly move away from the client ship in case of an emergency shut down and disconnection of transfer hoses.