So in the Fully Charged video about this ship, the shipyard CEO just casually mentions the customer is looking at having 40 MW at each end.

It would also be interesting to know how they plan to balance the grid when the ship plugs is.

It’s not that big when you consider many DC car chargers can deliver 0.25 MW.

So ”only” 42 car sized chargers for a massive boat, there are probably some massive Tesla superchargers sites that approach that.

The Cruise Ship Terminal in San Francisco has 12 mW. Apparently it's uncommon in that it's wired with enough power available so the cruise ships don't have to run their on board generators while docked in port here. It's a major pollution thing.