Latest Battery Technology, Solar Power and Unique Hull Features Halve Fuel Consumption.
ITALY – DENMARK – CHINA – The name Grimaldi has been associated with shipping since 1348 and today the Grimaldi group operates several services under a variety of titles, but maintains at its heart RoRo ferry services throughout the Mediterranean. Last month the announcement was made that the company has ordered six new such freight and passenger vessels from the Nanjing Jinling Shipyard, China and once again a contract between the yard and Danish marine engineering and design group Knud E Hansen means further development to the already established Grimaldi/ Knud E Hansen design.
The design of the newbuilds was developed by the Technical and Energy Saving Department of the Grimaldi Group together with Knud E Hansen in close cooperation with the shipyard. The RoRo’s are known as the ‘Grimaldi Green 5th Generation’ (GG5G) and will have a length of 238 metres, a beam of 34 metres and a gross tonnage of 64,000 tonnes. They will be able to transport over 7,800 lane meters of rolling units, equivalent to approximately 500 trailers.
The ships, the first of which is expected to be delivered in 2020, will use electricity in port, courtesy of large lithium batteries, thus guaranteeing zero emissions whilst at berth. These batteries will be recharged during navigation, through shaft generators adding the so-called peak shaving system, and with the aid of 600 m2 of solar panels, well suited to the three Grimaldi Lines vessels working in the Mediterranean environment, but still effective in the Baltic where the balance will be deployed on behalf of Finn Lines.
Grimaldi has invested a total of over $400 million and the new vessels are capable of carrying more than twice the quantity of vehicles than the largest of the incumbent ships operated by the company. As fuel consumption is the same as the previous craft, the energy saving when fully loaded will equate to 100%. There are several patented features in the design already together with more environmentally friendly features. The dreaded sulphur produced by the propulsive cylinders is combined with salt extracted from brine which converts it to gypsum in a chemical reaction.
The hulls are coated with silicon as opposed to traditional toxic anti fouling chemicals and the keel is designed to produce low level turbulence, with the consequent bubble streams reducing friction on an already slick surface, thereby aiding fuel consumption, an avowed aim of President Gianluca Grimaldi and his fellow directors. Knud E Hansen Managing Director Finn Wollesen said:
“It’s been a pleasure to cooperate with Grimaldi on the design of these vessels. The collaboration has been very fruitful and enabled us to develop a new generation of vessels that represents real advancement in terms of sustainability and efficiency by using various new technologies.”
Source: Handy Shipping Guide