are those cooling fins on the rear end of the motor?

they look strange.....

i bet youll never have to worry about overheating the esc anymore...looke like you got water, air, and fin cooling on it

great boat SJFE, cant wait to see it run....

how did you get the water cooling on that esc?

im going to be using a plane esc that has no cooling and kind of want it water cooled.