Comment by dzhiurgis

I think that makes a ton of sense, esp since you can retrofit diesel-electric ferries.

Skips expensive DC charging infrastructure, but does require to buy two batteries which can get expensive. Over time vpp / market arbitrage can pay for battery itself tho.

Also sacrifices some of the cargo capacity. I.e. for wellington - picton that’s about 4 rail cars or 6 semi trailers.

Edit: also smaller turnaround time.