Can there be electric offshore race boats?

[gearhead]

I have seen offshore boats that have 500 gal gas tanks, if they were full of gas would weight over 3000 lbs.
Two big block engines with accessories, transmissions, cooling, out drives would weight in at 3000 plus.
I have seen engines cost 50,000.00 plus, Boats over a million dollars.

So for the sake of argument, lets not consider cost and figure out what it would take to make a boat that would go 50 mph and go for 100 miles.

With the light boat hulls available and the newer batteries available and the newest types of motors, what would it take?????????????

The boat could be perfectly balanced and stay that way all thru the race.

I don't want to hear why it can not be done, I want to hear HOW we can do it! I know it can be done!