I found this on the side of a little-travelled road 2 years ago.
Not sure if it ever saw water but it’s a very creative construct.
The center of the "vehicle" (?) is an early 60’s fiberglass boat with aluminum skin over the bow, the aft part is a frame bolted to the boat, with a 4-cyl Lycoming and prop mounted on it.
It sits on a 1950’s boat trailer.
That’s as detailed an investigation I could get as I don’t like snooping in areas with high rifle ownership 🙂
Red-neck airboat.