The SSRN Seaview and the FS-1 Flying Submarine from the TV Series, "Voyage to the Bottom of the Sea.", created by Irwin Allen.
The meshes are by Jon Marcure. It's hard to
do a flying sub addon without water, but maybe in a future version of Orbiter.
In the meantime, the Seaview awaits in the Atlantic Ocean, and the Flying Sub is landed at Cape Canaveral. Have Fun!