Here is my boat that I built for my A-level project in DT. The specs are as follows;
Motor - 3000kv mystery brushless outrunner
Speed Controller - 30A mystery
Prop - 26mm Graupner K
Hull - 34cm long high impact polystyrene
Batteries - 8x NiMH AA cells ()
I have bought a 20c 1900mah lipo pack which I will try when I get the boat back from the exam board!