This is a modified version of the 40CM wind-powered boat model on the internet. The size has been reduced and it is now printed in two parts, with a length of 31cm. The fan part has been fully protected to avoid the propeller blades hitting people

The power comes from a 1606 motor and a 4-inch propeller. This protective frame can support a maximum of a 5-inch propeller. The motor mount is fixed with M2 screws with a diameter of 12 mm. If you want to replace the motor, you'll need to modify it yourself.

The other parts use M3*16 screws and nuts.

You can just check the position of the motor wires and open holes to thread them through yourself. The 5*4 D-type sealing strips used for the hatch cover ensure no water leakage. The opening at the top of the hatch cover can be used to place a B-ring to monitor the battery level. The opening at the back is for draining water in case of accidental ingress, with a diameter of 13.8mm. You can just buy a silicone plug for it.

It can accommodate a battery with a maximum capacity of 5000 mAh