Seair Technologies, Inc. manufactures ultralight aircraft and hovercraft. On our web site you can find the latest information, pictures, videos, and specs for the Seair Hovercraft and Flying Boats. A Seair Flying Boat is an ultralight aircraft, designated as a 'trainer' ultralight because it has two seats. It is basically a hang glider wing mounted on a small inflatable boat, powered by a Rotax engine. Seattle, Washington