It's worth electrifying truck transport because truck engines have to be reasonably compact and trucks generally don't go far from the electrical grid so can recharge whenever necessary (and possibly in future while driving).
For a container ship this is inverted, so I'd expect CO2-neutral shipping to use minimally-processed biofuel in a turbine power plant. Or nuclear, of course.
It’s worth moving back to trains. trucking took over partly because it removed the infrastructure problem from the truck company. Which left it to governments to (not in some cases) maintain. trains are way more predictable too.
For a container ship this is inverted, so I'd expect CO2-neutral shipping to use minimally-processed biofuel in a turbine power plant. Or nuclear, of course.