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A comment on Battery-Powered Ships Next Up in Battle to Tackle Emissions. Parent comment

Re:Battery-Powered Ships Next Up in Battle to Tackle Emissions by Florin_Andrei on Wednesday August 07, 2019 @06:08PM (#20639686)
> Transatlantic and transpacific container shipping is still going to be among the last sectors of the economy to be electrified.

It probably boils down to energy density, plain and simple.

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Re:Battery-Powered Ships Next Up in Battle to Tackle Emissions by WalterBright on Wednesday August 07, 2019 @08:02PM (#20640521)
For ships? Weight of batteries shouldn't be a big issue with ships. They could be used as ballast, for example.
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Re:Battery-Powered Ships Next Up in Battle to Tackle Emissions by sanxiyn on Wednesday August 07, 2019 @09:02PM (#20640877)
Weight of batteries is a big issue with ships. Vaclav Smil calculated diesel is 20x dense, turning 5000t diesel fuel for Asia-Europe trip to 100000t battery which is not economical.

https://spectrum.ieee.org/transportation/marine/electric-con...

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Re:Battery-Powered Ships Next Up in Battle to Tackle Emissions by WalterBright on Wednesday August 07, 2019 @09:10PM (#20640930)
I wonder if a hybrid can reduce that problem, i.e. a hybrid battery/sail, or even a hybrid battery/windmill system.

A windmill would help both push the ship and generate power to the batteries.

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