Merchant marine:
total: 348 ships (1,000 GRT or over) 9,414,676 GRT/12,207,346 DWT
ships by type: barge carrier 2, bulk 71, cargo 26, chemical tanker
13, combination bulk 2, combination ore/oil 1, container 79,
freighter 15, heavy lift carrier 3, passenger/cargo 1, petroleum
tanker 73, refrigerated cargo 3, roll on/roll off 46, short-sea
passenger 2, specialized tanker 2, vehicle carrier 9
note: includes some foreign-owned ships registered here as a flag of
convenience: Australia 1, Canada 4, Denmark 15, France 1, Germany 1,
Netherlands 3, Norway 7, Puerto Rico 4, Singapore 11, Sweden 1,
United Kingdom 3; also, the US owns 549 additional ships (1,000 GRT
or over) totaling 29,616,347 DWT that operate under the registries
of Antigua and Barbuda, Australia, The Bahamas, Belize, Bermuda,
Cambodia, Canada, Cayman Islands, Cyprus, Finland, Gibraltar, Hong
Kong (China), Indonesia, Isle of Man, Italy, Liberia, Malta,
Marshall Islands, Netherlands, Norway, Norway (NIS), Panama, Peru,
Philippines, Saint Vincent and the Grenadines, Singapore, Tonga, UK,
Vanuatu, and Wallis and Futuna (2002 est.)
Airports:
14,801 (2002)
Airports - with paved runways:
total: 5,131
over 3,047 m: 185
2,438 to 3,047 m: 222
914 to 1,523 m: 2,390
under 914 m: 969 (2002)
1,524 to 2,437 m: 1,365
Airports - with unpaved runways:
total: 9,670
under 914 m: 7,802 (2002)
over 3,047 m: 1
2,438 to 3,047 m: 7
914 to 1,523 m: 1,702
1,524 to 2,437 m: 158
Heliports:
149 (2002)
Military United States
Military branches:
Army, Navy and Marine Corps, Air Force, and Coast Guard (Coast
Guard administered in peacetime by the Department of Homeland
Security but in wartime reports to the Department of the Navy)
Military manpower - military age:
18 years of age (2003 est.)
Military manpower - availability:
males age 15-49: 73,597,731 (2003 est.)
Military manpower - fit for military service:
NA