The ‘Dragon’ class ships are to be chartered by INEOS Europe for the transportation of ethane to Europe from the Mariner East project in the USA. The carriers are purpose built for the transportation of ethane, although they in addition can carry a wide range of petrochemical gases, LPG and LNG. Operational safety and efficiency, economic fuel consumption, and compliance with all applicable environmental regulations were the overriding considerations in the placing of the contract with Wärtsilä.
The various individual Wärtsilä solutions are integrated to form a fully optimised package. Furthermore, by engineering and supplying the complete cargo plant, the gas fuel supply system and the propulsion plant enables Wärtsilä to achieve optimal energy consumption efficiency for the entire vessel. This is clearly demonstrated, for example, where the LNG supply system is integrated with the cargo handling system so that it can be used to cool the cargo. In so doing, less energy and power is needed to keep the cargo temperature suitably low, thus providing a more efficient and environmentally sound overall system.