The Loening XSL was an American submarine-based reconnaissance flying boat designed and built by Grover Loening Aircraft Company for the United States Navy.

[1][2] First flown in 1931, the Loening XSL was a lightweight flying-boat designed to be folded up and stored in an 8-foot-diameter watertight tube on the deck of a submarine.

[2] It was a single-seat, mid-wing monoplane powered by a 110 hp (82 kW) Warner Scarab radial engine mounted above the wing driving a pusher propeller.

[2] Originally designated the XSL-1 by the Navy, it was re-designated XSL-2 in 1932 when it was re-engined with a 160 hp (119 kW) Menasco B-6 engine.

[1] Data from aerofiles.com[2]General characteristics Performance