Outboard motor powered waterplane.
Fullsize image: https://diqn32j8nouaz.cloudfront.net...e_fullsize.jpg
https://diqn32j8nouaz.cloudfront.net...waterplane.jpg
Water Plane
https://diqn32j8nouaz.cloudfront.net...ane_patent.jpg
Previously:
https://www.homemadetools.net/forum/...596#post143264
https://www.homemadetools.net/forum/...365#post131263
