Lake Aircraft was a manufacturer of amphibious aircraft. Grafair operates a fleet of business jets and amphibious aircraft. An airport for use by seaplanes and amphibious aircraft is called a seaplane base. AVIC claims it is the largest amphibious aircraft. Today the company employs some 3000 specialists and is developing and manufacturing amphibious aircraft. Purely water-based seaplanes have largely been supplanted by amphibious aircraft. Seaplanes, flying boats, and amphibious aircraft are designed to take off and alight on water. Some seaplanes and amphibious aircraft are able to land in the island's lagoons. The amphibious aircraft was a converted U.S. Navy Catalina flying boat. The cruiser also carried a single Supermarine Walrus amphibious aircraft. Bombardier Aerospace has the Amphibious Aircraft Division in Saint-Laurent. It is a turboprop-powered amphibious aircraft built largely of composite materials. An amphibious aircraft can take off and land both on conventional runways and water. The ICON A5 is an amphibious aircraft in the light-sport class. The Dornier Seastar is a turboprop-powered amphibious aircraft built largely of composite materials.