First passenger vessel with hybrid propulsion
The Transfluid hybrid system passenger boat has come into service on the river Oise. The farsighted idea of the COMMUNAUTE ‘DE COMMUNES DES DEUX VALLEE’ was to understand the importance of giving its passengers an new way of navigating that is able to put together the comfort of sailing with environmental protection. The agency commissioned the L’ESCAPADE, a passenger boat designed by the office of the DN & T Belgian naval architecture office at the Alumarine shipyard in Coueron on the Loire Atlantique.
L’ESCAPADE is 28 meters long and 5 meters wide, can hold 102 cruise passengers for a few hours of navigation and it can also accommodate 60 people in the case of catering services on board.
The customer’s request was to be able to navigate rivers at cruising speed in utmost silence while at the same time having a vessel that would lend itself to different uses such as cruise-speed navigation, catering cruises, special events and so on; the solution put forward by the shipyard met all these needs using the TRANSFLUID hybrid system TRANSFLUID in this way.
The boat is equipped with a VOLVO – model D5A TA engine which gives a rate of 118 kW at 2300 rpm combined with a TRANSFLUID model HM2000 hybrid transmission and a Power shift model REVERMATIC 11-700RBD with a reduction ratio of 1.88 as well an integrated Thrust bearing. The electrical power of the hybrid system is 75 kW. The energy is provided by on-board FE-LI-PO 4 batteries technology that supplies the hybrid system while navigating in electric mode.
The Transfluid hybrid system fitted on L’ESCAPADE is the HM2000 model with a 75 Kw rated thrust electric engine at a rotation speed of 3000 rpm and powered on 300 V dc voltage batteries by a single frequency bidirectional drive which enables the use of the electric engine both as a motor and as a generator. A Translfuid Revermatic marine gear is fitted on the hybrid system and this, together with the power shift technology installed, makes thrust smoother.
The hybrid module, moreover, gives you another navigation option: the booster mode. This mode allows you to add the thrust of the diesel engine to that of the electric motor, even in the transitional rotation speed phase, especially in complex navigation phases or while maneuvering, thus ensuring you a wide maneuverability of the boat which is handy for boat Captains and safe for passengers.
This simple solution that puts together hybrid transmission and hybrid marine reversing gear is appreciated by the shipyard for the easy assembly of the hybrid transmission on the Diesel engine and the ease of fitting it on the propulsion line (Diesel engine / hybrid system / transmission) on board.
The hybrid system’s interface standardization enabled the shipyard to freely choose the most suitable diesel engine for this application, allowing it to reach top propulsion efficiency.
The first impressions of the tourist service are absolutely encouraging and positive. Tourists sail on the Oise in absolute silence, surrounded by nature and without the noise and the emissions which could harm the surrounding environment.