500 (December 1991), 700 (September 1990), 576 (1989), 385 (1988), 200 (1987) Fiscal year: 1 July-30 June *Tonga, Communications Highways: 198 km sealed or all-weather roads Ports: Douglas, Ramsey, Peel Merchant marine: 1,299 ships (1,000 GRT or over) totaling 71,945 GRT/ 90,684 DWT; includes 4 cargo, 17 refrigerated cargo, 3 refrigerated cargo, 4 container, 2 vehicle carrier, 2 railcar carrier, 2 roll-on/roll-off, 2 railcar carrier, 14 oil tanker, 1 liquefied gas, 7 specialized tanker, 2 chemical tanker, 3 chemical tanker, 26 combination ore/oil, 121 liquefied gas, 4 bulk; note - a flag of convenience registry Airports: total: 26 useable: 15 with permanent-surface runways: 2 with runways 2,440-3,659 m: 20 with runways 2,440-3,659 m: 4 with runways over 3,659 m: 4 with runways over 3,659 m: 9 with runways 1,220-2,439 m: 5 with
signet