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New Ferries

Very interesting power configuration

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Colin Bishop21/07/2021 12:52:35
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I thought some of you might be intersted in the power setup in the new ferries for Brittany Ferries which are being ordered. The hybrid LNG/electric arrangement offers a lot of versatility to ships which experience constantly differing power demands on relatively short routes. The diagram in the article shows the options and what they can be used for plus the ships can make use of shore power when berthed.

**LINK**

Colin

Richard Simpson21/07/2021 13:09:24
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The link seems to take you to a software site Colin!

Ah, second time OK, looks like it was being overwritten by Malware!

Edited By Richard Simpson on 21/07/2021 13:10:30

Richard Simpson21/07/2021 13:18:47
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The latest generation of cruise ships are using dual fuel diesel engines with LNG and diesel fuel as the two fuels. Diesel fuel for deep sea and LNG for alongside. The rest of the plant is fairly standard diesel electric set up.

The trouble is that both LNG and diesel fuel are both of a much lower calorific value, especially LNG, than residual fuel so the ships actually need to carry and burn more fuel for a given passage, reducing space available for cabins. Added to that is the significant amount of energy required to maintain the LNG as a liquid and it is easy to see the overall cost of running the ship is going to be a lot higher than it has ever been.

On top of all that Covid is going to force a rethink of the numbers of passengers allowed on ships so profitability is going to take quite a hammering. The cruise and ferry industries are both going to go through some difficult times before things settle down again.

ashley needham21/07/2021 13:50:32
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Wonder what battery chemistry they will use?

Ashley

Ray Wood 221/07/2021 14:25:24
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Hi Ashley,

At least a 6 cell Lipo pack !!

Regards Ray

ashley needham21/07/2021 14:47:31
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I was reading that a lot of manufacturers are trying to develop electric motors without noedidium (or woteva) magnets as 90% of the supply comes from China...ditto battery manufacture. Already a shortage of printed circuit boards (from China).

Ashley

Richard Simpson21/07/2021 16:41:06
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Don't be silly Ashley, they don't use batteries for main propulsion, they use an extension cable.

Richard Simpson21/07/2021 16:42:16
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Oh and emergency batteries are still good old lead acid up to 2010.

ashley needham21/07/2021 23:06:52
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Sorry Richard...I can be a bit useless at times....

Ashley

Colin Miller24/07/2021 08:38:23
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I hope they get to sea quicker than the 2 new LNG Calmac ferries

which are turning into an utter disaster.

One thing that’s been highlighted for these ferries due to be used on the Clyde

the LNG gas is having to be shipped from Scandinavia or Spain using vessels/vehicles powered by diesel

so how much greener are they really?

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