Saft To Provide 800 kWh Battery For Electric Ferry

JUL 16 2015 BY MARK KANE 5

Saft Seanergy

Saft Seanergy

Saft announced that it won a contract with Imtech Marine for an 800 kWh battery combining two Seanergy systems for the new hybrid-electric ferry owned by CMAL in Scotland. Imtech Marine hopes for up to 30% better fuel economy, which will be verified after deliveries planed for the second half of this year.

“Two Saft Seanergy® systems will be at the heart of the diesel-electric hybrid propulsion system and energy management system for ‘Hybrid III’, the Roll On Roll Off (RORO) passenger and vehicle ferry designed for use on Scotland’s short sea crossing routes around the Clyde and Hebrides. The new vessel, currently under construction by Ferguson Marine Engineering Ltd for CMAL (Caledonian Maritime Assets Ltd), will be Scotland’s third hybrid ferry when it enters service in autumn 2016, carrying up to 150 passengers and 23 cars or two HGVs (Heavy Goods Vehicles). It is being funded by the Scottish Government to help meet the target set in its Climate Change Delivery Plan to reduce CO2 emissions in the transport sector by at least 20 percent by 2020. It will have a service speed of nine knots and because it uses both diesel and electric power, its fuel consumption will be significantly lower than a conventional ferry, leading to fuel and CO2 emissions that are at least one fifth lower than a conventional arrangement.”

Imtech Marine is supplying hybrid propulsion systems for all types of vessels and Saft hopes that this first deal will pave the way for more orders in the future. Hybrid-electric ferry is some kind of extended-range electric car counterpart. In the case of Saft, batteries are Lithium Iron Phosphate type with marketing name Super Phosphate (SLFP).

“As a modular system, Seanergy® can be scaled to meet any requirements up to 750 V. The modules are based on Saft’s Li-ion Super Phosphate (SLFP) cell chemistry, which offers the advantage of improved high energy capability and optimized total cost of ownership when compared with standard Li-ion phosphate technologies. In January 2015, marine industry independent safety assessor Bureau Veritas delivered the highest quality assessment for the Seanergy modules, establishing that the design conforms to recognised industry quality and certification standards. The two Seanergy® systems, which provide a total of 800 kWh of energy storage, can power the vessel in battery mode only and in hybrid mode in combination with a diesel generator. The batteries will be charged overnight from shore supply while the ferry is in port. When at sea, Imtech’s energy management system will balance the energy delivered by the diesel genset and battery systems to make propulsion as efficient and clean as possible, enabling the genset to run at peak efficiency.”

Jayesh Vir, Saft’s Key Account Manager for the Marine Segment said:

“Interest in hybrid propulsion is growing fast in the maritime sector as ship owners and operators come under pressure to meet more stringent energy efficiency targets. This contract for a very high profile ferry service in Scotland is further confirmation that Saft’s Li-ion technology offers a reliable, high performance and fully commercialized solution for hybrid propulsion on even the largest sea-going vessels.”

Here is video on one of the other hybrid-electric ferry:

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5 Comments on "Saft To Provide 800 kWh Battery For Electric Ferry"

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I once talked to the engine room officer on the Carnival Pride cruise ship about how much fuel the ship uses in a day. The cruise ship will go though hundreds of tons of fuel a day. And will use a oil truck’s worth of fuel to go a mile.

If some type of mega battery were invented that allowed cruise ships to take a hundred times more power then this battery could store it would really cut down emissions by a huge factor were several cruise ships gather together.

The things that you mentioned are, to me, a secondary concern. I think the first order of business would be to lower particulate and criteria emissions like NOx, SOx, HC, CO, etc. Ocean shipping and even cruise ships use bunker oil that still has lots of nasty stuff in it that is not present in Diesel fuel. IMHO, the environmental impact of emissions is much more important as a first step than simply reducing fuel use and therefore CO2 emissions.

Ferries are a perfect place for the electrification of maritime industries to start. They generally have short trips to make and at each end there is a required unloading and loading time wherein they can be fast-charged.

Convert them all to electric.

Indeed. It will take significant advances in battery tech before, as JD Straubel envisions, all transportation except planes and rockets is powered by batteries. At present, the only large boats/ships which can effectively use batteries for propulsion are those which only make short runs and spend a lot of time tied up at the dock.

As battery tech advances, marine battery-powered electric propulsion will spread to boats and ships capable of longer and longer voyages.

No there are many small E boats with or without solar that do very well thank
I’m on my 34′ trimaran solar/wind generator, sail powered now.
But large ships, even medium size ones need more energy than batteries 10x’s better than we have now won’t do.
Better would be sail/kite assist using a CCGT/steam electric drive run on a clean fuel.
Due to emissions rules the dirty fuels used now can’t go in many countries anymore like Europe, US, are switching to cleaner fuels.