Okay, so the April Fool Pogo was a real prototype, but didn't really fly off of any ship (at least not that I'm aware of), so April fools! (Or as David S put it, "Har, har, har.")
As I trolled the web looking for a suitable--real--LOOTM, I stumbled across this classic sailplane with an overall shape, and especially a wing, that I found to be quite beautiful. The Goppingen Minimoa series was constructed and flown in Germany in the mid-1930s. The Go 3 Had a top speed of 138 MPH, a glide ratio of 28:1, and was the first sailplane to carry water ballast. But with only 4 flyable examples in the world, most aircraft and images are of models (though some span 12 feet or more!).
The (real) LOOTM for April
The Goppingen Minimoa