Hi! I will be fortunate if I get help from the experts in this forum. I have a model ship designed by myself. Its tug type about 3 feet long and 7 inches wide. Single screw. Made up of composite material. It is Radio Controlled. Without power it moves straight. On power due to propeller walk effect it should drift to one side according to propeller rotation. It does. But soon adapts a ZIG ZAG course. I really need some practical tip to overcome this problem. Why it is happening?
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