First of all you will need the excellent:Planet T5 2.4GHz 5 Channel Transmitter & Receiver Set which has been designed for crystal-free operation, and has a range up to 100 metres (always perform a range check before use). However some customers report using successfully over 100 meters.
With this we suggest you use: Viper Marine Forward & Reverse Speed Controller 25Amp which is a Brushed Speed Control designed specifically for use in RC boats. This Speed Controller has a 25Amp motor limit, which means you can use any DC Brushed motor as long as the current drawn by that motor does not exceed 25Amps under load (with the prop connected, under water). Other required products include:
Planet T5 2.4GHz 5 Channel Transmitter & Receiver SetViper Marine Forward & Reverse Speed Controller 25AmpSingle Standard Servo - RC3SLead Acid Battery 12V 7Ah - BAT12V7Electric Motor 9.6V - G7307Heavy Duty Prop Shaft M4 x 30cm Tube - PSU2/12Universal Coupling Joint - UCJCoupling 4mm threaded for PSU2 Prop Shaft - UCF/M4Coupling 5mm for Motors & Gearboxes - UCF/5Large Rudder 67mm Blade Depth - RAU4Robbe Dynamic 2 Blade Propeller 40mm - R1462
Preferences do vary however, and these products are just offered as a guideline. Please give us a call or email if you require more in depth guidance.