by Areg7
This Small boat fits in the notch at the back of the Fast Response cutter (http://www.semaker.com/productdetail/25665). For control it uses an RC receiver and 5g servo motor to steer twin 8.5mm motors. For propellers I just clipped almost all of a toy quadcopter's props off and used the rest. To keep the electronics hidden I'm using a tiny 450 mAh 2s lipo (there's almost no room because of the low deck,) and consequently I only get about 4 min of runtime. VIDEO:
https://drive.google.com/file/d/1sGlucJXdDwhA6QLrOvrtvGFS8XXUHIeb/view?usp=sharing