Norway: Multi Maritime Launches New Green Ferry Concept

By Vessels

Multi Maritime has, in close collaboration with the ferry international company Fjord1, pushed a new green ferry idea. The ferry vessel is a “plug-in” LNG hybrid, that includes various functions to restrict the ferry’s environmental footprint.
The concept has been created as a part of Fjord1′s bid for managing the Lavik-Oppedal ferry link in western Norway.
The most eye catching feature is the two Flettner rotors which acts as sails. For the Lavik-Oppedal link, that has wind conditions appropriate for the Flettner rotors, it has been planned that the rotors redound with minimum 12 per cent of the ferry’s whole energy consumption. The theoretical potential is considerably higher.
A new hull form and movement concept has been created. Usually on a double ended ferry vessel both the forward and the aft propeller secures thrust. However the forward propeller is cinsiderably less efficient than the aft. The new conception has thrusters with pitch propellers that can be controlled, and that might be feathered, the forward propeller is then feathered and the aft propeller secures all needed thrust during transit. This is going considerably to highten the ferry’s movement efficiency. When docking and undocking both propellers can be used for maximal maneuverability.
Energy is secured by a very efficient “lean burn” LNG driven engine. Part of the energy usually is getting lost through the engine’s exhaust is recovered as electricity with an ORC heat system for recovery. The engine is a part of a hybrid system that is consists a battery bank. The battery bank can be sized to be charged with an arbritary sum of coast power. Electricity is spreaded with a direct current (DC) distribution system, that restricts electrical losses in comparison to conventional systems.
The ferry vessel's capacity is about 125 cars and it is 110 meters long and 17 meters wide.