No its not brushless. All those boats come with either Mabuchi or Johnson motors.

They power a 7.2V motor with 9.6V because the inexpensive cells it comes with will drop to that almost, under load. It would be nice to drop in a brushless and change the driveline to suit also.

Any brushed speed control that has a peak rating of 100 amps and a nominal raing of 50 amps will do fine i think.