Electrifying ferries is great, but this particular one has a run time of 20 minutes (and a charge time of 10 minutes). I get a totally different vibe from 'oceanic ship' than a 20 minute ferry ride.
Near me, we now have a hybrid ferry, no charging infrastructure, but it still uses much less fuel than before it was refit, so that's cool too. It's bigger than the one you linked and sails on a longer route: 2,499 passengers, 202 vehicles, typically serves an 8.6 mile route.
Absolutely, but that's how this starts. Boats too started as ferries, it took many, many years before boats purposefully went into blue water. Ferries are a great testbed, they have lots of cycles and they are a pre-cursor to coastal and then eventually larger ocean going vessels, which I predict will go diesel-electric before they go all electric.