Quantity   Component name
1 × Raspberry pi 2 B
2 × IMU: AltIMU-10 https://www.pololu.com/product/2469
1 × 4-Channel RC Servo Multiplexer https://www.pololu.com/product/2806
1 × Servo Futaba S3003 for the rudder control
1 × Servo HITEC HS-785HB for the sail control
1 × GPS (with an external antenna)
1 × 2.4GHz 3 channels remote control, and its receiver (to be able to manually control the boat)