I think that's the target demographic, and it wouldn't work for every application they do, but there are some situations where it may work well.

Yes, I’ve seen Kenmore’s and Harbour Air’s operation, but they are floatplanes, beaches, poor ramps in the bush are part of the deal.

The market is driving these electric planes.
It would be a huge advantage to cut 1/4 or 1/3 of the rental price out of the equation.

The amount of Amps needed to be pushed to the aircraft for a quick charge is nothing like shore power for a boat. A valid comparison is not even possible. Next time you get a chance take a look at the power cords for the new quick charge auto facilities. Cord length is also critical. To push those kinds of AMPS cords must be kept short or have massive diameters.

I can't imagine how long a battery would last under those conditions as well. For an airliner, you might get 5 years if you are lucky. I think to be viable, the battery would have to swapped out every flight, and sent to a recharge facility at the airport, the logistics would be impossible really.

Current capacity of the cord can be solved with diameter and/or materials.

That's off-the-shelf technology, heavy industry does it all the time.

The connector might have to be special. Large ships don't "plug in" to shore power, they actually hard-wire the shore power wires to the ship's electrical bus. It only takes a few minutes, but it's probably a little too technical for line use. And you need to be absolutely certain the breakers are off before you bolt a wire to a high-voltage bus :rolleyes:

Probably just need a connector with a mechanical latch-in feature and good seals. As opposed to the current 115VAC 400Hz aircraft push-in plugs, which has the same arcing potential as residential house current.

Proper insulation and cord lengths that don’t allow contact with the dock or water. Build a terminal on the dock and a switch on shore. Lights/audible warning to signal when charging.