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Finnish firm WE Tech Solutions has received an order to deliver its energy-efficient permanent magnet shaft generator solution to two new 18600-deadweight-tonne (dwt) chemical tankers with an option for another two.

The tankers are built by China State Shipbuilding Corporation (CSSC) Chengxi Shipyard for the Swedish ship owner Ektank AB. The delivery of WE Tech's equipment is due to take place in October 2017.

"The solution from WE Tech is important for us to build the next generation chemical tankers, in terms of energy efficiency and sustainability. These vessels will meet all known future demands from governments, the industry and from our customers," commented Jorgen Johnsson, Managing Director of Ektank AB.

WE Tech's solution is based on variable frequency drive technology (WE Drive) and the direct drive permanent magnet shaft generator. The solution allows the main engine to run at variable speed while the electrical network is generated by the shaft generator, producing all the electricity on board without using any fuel to run the auxiliary generators when sailing.

"This creates tons of fuel savings and reduces operational and maintenance costs," WE Tech explained on Tuesday.

If the main engine is out of operation, the solution uses the shaft generator as the motor - a cost-effective auxiliary propulsion prive (APD) to ensure the vessel's safe return to port.

WE Tech notes that this solution is also an efficient way to distribute power to bow thrusters and the cargo handling system of the tankers - by connecting the large electrical inverter units to the common DC link of WE Drive. Furthermore, when the tankers are in the harbour, the solution allows the use of cleaner shore power. This is designed to save fuel and also reduce emissions both at sea and at port.

"WE Tech is proud to be a pioneer to supply the most energy efficient solutions. We, as well as our customers, strongly believe that our innovative technology and reliable solutions are the future for the marine industry," said Martin Andtfolk, Sales Manager of WE Tech.

Image: The MT Ekfors - owned by Sweden's Ektank AB.