Propulsion specialist Schottel has announced that Festøya, the first of four hybrid ferries for Norwegian ferry operator Norled equipped with its electric drive systems, has recently entered operation. According to the company, each of the four double-ended ro-pax ferries, built at the Remontowa shipyard in Poland, feature two of its SRE 340 EcoPellers, powered by a diesel-electric hybrid system and operated by battery power during transit.
The company says that the SRE 340, 2.1m-diameter (7ft) fixed-pitch propellers enables economical operation of the vessels at a service speed of 10kts and a free running speed of 12.5kts. The propulsion units are designed to provide full thrust in any direction, enabling precise directional control even in strong winds or currents.
In operating mode, the power is supplied to the propulsion system by two rechargeable battery packs installed on board. A shore charging system, which also includes an automatic mooring system, recharges these batteries from the mains when the vessels are docked. The vessels use generators, run on 100% biodiesel, only in an emergency.
Two of the 114.4m-long (375ft) and 17.7m-wide (58ft) Norled ferries will service the Festøya-Solavågen route and are capable of carrying 120 cars and 296 passengers. The other two vessels will operate the Mannheller-Fodnes route and are certified to carry a greater payload, with a maximum of 395 passengers.