11–20 of 102 posts
There are intermediate options. Moving away from diesel towards natural gas would dramatically reduce emissions (including sulfur emissions), while retaining high energy density.
Ferry service in the Puget Sound (Seattle Area) has suffered due to delays with electric ferries. The state refuses to maintain their existing fleet. Every line has frequent delays, and the international route which was suspended for “a couple years” in 2021 is now delayed until 2030. The frustration people have with electric isn’t the technology – it’s the dogmatic commitment to technology that isn’t quite ready, ba…
Energy density of batteries is much lower than that of fossil fuels. Which means that the weight of the ships would increase. In addition to the high price of the batteries, potential risks of electrocution, etc. There are intermediate options. Moving away from diesel towards natural gas would dramatically reduce emissions (including sulfur emissions), while retaining high energy density.
Energy density of batteries is much lower than that of fossil fuels. Which means that the weight of the ships would increase. In addition to the high price of the batteries, potential risks of electrocution, etc. There are intermediate options. Moving away from diesel towards natural gas would dramatically reduce emissions (including sulfur emissions), while retaining high energy density.
Electric is an immediate option. Norway has 80 electric ferries in service. https://businessnorway.com/articles/norway-showcases-award-w...
https://www.lngindustry.com/special-reports/21112023/the-ris...
Energy density of batteries is much lower than that of fossil fuels. Which means that the weight of the ships would increase. In addition to the high price of the batteries, potential risks of electrocution, etc. There are intermediate options. Moving away from diesel towards natural gas would dramatically reduce emissions (including sulfur emissions), while retaining high energy density.
Fossil fuels like natural gas are assumed to be the baseline in the Fuel EU directive entering into force in 2025.
All required reductions will have to come on top.
https://transport.ec.europa.eu/transport-modes/maritime/deca...
Energy density of batteries is much lower than that of fossil fuels. Which means that the weight of the ships would increase. In addition to the high price of the batteries, potential risks of electrocution, etc. There are intermediate options. Moving away from diesel towards natural gas would dramatically reduce emissions (including sulfur emissions), while retaining high energy density.
Not going to work in the EU. Fossil fuels like natural gas are assumed to be the baseline in the Fuel EU directive entering into force in 2025. All required reductions will have to come on top. https://transport.ec.europa.eu/transport-modes/maritime/deca...
Shifting to either would be a very significant improvement over the status quo. Whether that meets EU requirements is another matter.
https://www.reuters.com/markets/commodities/maersk-buy-bio-m...
Ferry service in the Puget Sound (Seattle Area) has suffered due to delays with electric ferries. The state refuses to maintain their existing fleet. Every line has frequent delays, and the international route which was suspended for “a couple years” in 2021 is now delayed until 2030. The frustration people have with electric isn’t the technology – it’s the dogmatic commitment to technology that isn’t quite ready, ba…
Meanwhile Norway has 80 electric commuter ferries in service. https://businessnorway.com/articles/norway-showcases-award-w...
Here is the largest e-ferry: https://en.wikipedia.org/wiki/E-ferry_Ellen
And a guide to the WA fleet: https://wsdot.wa.gov/sites/default/files/2021-10/WSF-FleetGu...
Wow, this is a really good paper. Supplementary info is really great too- they get into details down to floating charging port stations as part of the infrastructure. Surprising how much demand is from tugboats. I have questions about how you'd safely hook up 5 MW connections, but it's definitely solvable.
Ferry service in the Puget Sound (Seattle Area) has suffered due to delays with electric ferries. The state refuses to maintain their existing fleet. Every line has frequent delays, and the international route which was suspended for “a couple years” in 2021 is now delayed until 2030. The frustration people have with electric isn’t the technology – it’s the dogmatic commitment to technology that isn’t quite ready, ba…
Proposal: If we do it this way we won't have to spend as much money.
Counter: That's really hinky and it probably will blow up in our face.
Proposal: Yes but you can't prove it will. So it's what we're going to do.
Later: Blows up and goes over budget and takes two to three times longer.
Wow, this is a really good paper. Supplementary info is really great too- they get into details down to floating charging port stations as part of the infrastructure. Surprising how much demand is from tugboats. I have questions about how you'd safely hook up 5 MW connections, but it's definitely solvable.
There are also power connectors for cruise ships while they are in dock that handle lots of power. It looks like they use IEC 80005 for shore power. It looks like it is AC only but probably could be made to use DC.