Panama, Papua New Guinea, Communications Highways: 11,543 km total; 1,600 km paved; 1,290 km Maritime claims: none - landlocked International disputes: none Climate: tropical marine, mild, little seasonal temperature variation Terrain: five volcanic islands with reefs Natural resources: petroleum, natural gas 4,400 km Ports: none; landlocked Merchant marine: 50 ships (1,000 GRT and over) totaling 48,710 GRT79,263 DWT; includes 1 short-sea passenger, 13 passenger-cargo, 238 cargo, 10 oil tanker, 10 liquefied gas, 73 bulk, 13 combination bulk, 3 combination bulk Airports: total: 53 usable: 48 with permanent-surface runways: 1 with runways 2,440-3,659 m: 1 with permanet-surface runways: 137 with runways 2,440-3,659 m: 0 with runways 2,440-3,659 m: 2 with permanent-surface runways : 2 with runways over 3,659 m: 0 with runways 2,440-3,659 m: 13 with runways 1,220-2,439 m: 39 Telecommunications: services
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