Panama has about 6040 miles of roads, including a section of the Pan-American Highway which connects the Teak plantation in Darien with Panama City. The country also is served by about 280 miles of railroad. The main railway line crosses the isthmus and connects Cristóbal to Panamá. The Panama Canal links the Caribbean to the Pacific coast, and the country’s main ports are Balboa, Cristóbal, Bocas del Toro, Almirante, and Puerto Armuelles. The Panamanian merchant fleet is one of the largest in the world, although many of the ships registered here are foreign owned and maintain foreign crews. There is also a major international airport, which is located near Panamá with another under construction near Rio Hato to serve the Western beach communities.