A Fish Farm First For Wärtsilä
By Jack Burke16 August 2017
Wärtsilä will deliver the ship design and propulsion system for a new processing and transportation vessel that will be the world’s first to use a hybrid propulsion system.
Wärtsilä will supply an integrated propulsion solution that includes a 10-cylinder Wärtsilä 31 main engine, auxiliary engines, propulsion machinery, the propulsion remote control system and the electrical & automation system. The main engine is rated 6100 kW and has a bore and stroke of 310 X 430 mm.
The delivery of the Wärtsilä solutions will be during autumn 2017 and the vessel is scheduled for delivery in summer 2018. The order was recorded in Wärtsilä’s order book in the fourth quarter of 2016. The vessel will be built at the Balenciaga shipyard in Spain on behalf of Hav Line AS of Norway.
Notable environmental gains are made possible by a Wärtsilä hybrid propulsion solution supported by batteries, which results in very low emission levels, the company said. The company said this is the world’s first processing and transportation vessel for the fish farming industry to utilize this solution. By absorbing most of the engine’s load fluctuations and vessel load variations through batteries, the engines can be operated close to its optimum design point, thereby providing the highest level of efficiency, which in turn minimizes the exhaust emissions.
The design is tailored to the customer’s specifications. During the development phase of the project, Wärtsilä acted as the owner’s consultant to ensure an environmentally sound and functionally effective solution. The vessel’s hybrid propulsion machinery has the power take-in/ power take-off (PTI/PTO ) powered by batteries and is combined with the fuel efficient Wärtsilä 31 main engine. The environmentally sustainable hybrid battery configuration is new for this type of vessel.
“The fish farming industry, like other marine industry sectors, is seeking better ship designs and greater efficiencies that reduce overall operating costs and lessen the environmental impact. Wärtsilä is proud to have been selected for this project that introduces the world’s first hybrid propulsion system for this kind of vessel,” said Riku-Pekka Hägg, vice president, Wärtsilä Ship Design.
“We very much appreciate Wärtsilä’s support in designing a vessel that meets our operational and environmental requirements,” said Jon Hinder, chairman of the board, Hav Line Gruppen AS.
Wärtsilä’s integrated solution includes the initial, basic, and detailed ship design, a 10-cylinder Wärtsilä 31 main engine, a 2-speed gearbox, a controllable pitch propeller, including the HP propeller nozzle, stern tube seals and bearings, the Wärtsilä ProTouch propulsion remote control system, two 9-cylinder Wartsila 20 auxiliary engines rated 1665 kW, and the electrical and automation system that includes a hybrid battery PTI/PTO package.
The Wärtsilä 2-speed gearbox enables lower propeller speeds and optimized propulsion efficiency during transit, while still using the main engine to power the shaft alternator. This results in lower fuel costs, both for production and production of electrical power, the company said. The custom-designed CPP propeller is of Wärtsilä’s successful G-hub configuration and is combined with the HP nozzle. This is designed to provide maximum reliability and efficiency and is a popular choice for vessels with this operational profile.