What was the nickname given to the Hughes H-4 Hercules, a heavy transport flying boat which achieved flight in 1947?

The nickname given to the Hughes H-4 Hercules, a heavy transport flying boat that achieved flight in 1947, is Spruce Goose. This name was given due to its colossal size and the fact that it was primarily constructed using laminated layers of plywood, which gave it the appearance of being made of spruce wood. Despite its impressive size and successful flight, the Spruce Goose only flew once and is now on display at the Evergreen Aviation & Space Museum in Oregon, USA.