Data code: none; the US Government has not approved a standard for hydrographic codes—see the Cross-Reference List of Hydrographic Data Codes appendix
Economy
Economy—overview: The Atlantic Ocean provides some of the world's most heavily trafficked sea routes, between and within the Eastern and Western Hemispheres. Other economic activity includes the exploitation of natural resources, e.g., fishing, the dredging of aragonite sands (The Bahamas), and production of crude oil and natural gas (Caribbean Sea, Gulf of Mexico, and North Sea).
Communications
Telephone system:
international: numerous submarine cables with most between
continental Europe and the UK, between North America and the UK, and
in the Mediterranean; numerous direct links across Atlantic via
satellite networks
Transportation
Ports and harbors: Alexandria (Egypt), Algiers (Algeria), Antwerp
(Belgium), Barcelona (Spain), Buenos Aires (Argentina), Casablanca
(Morocco), Colon (Panama), Copenhagen (Denmark), Dakar (Senegal),
Gdansk (Poland), Hamburg (Germany), Helsinki (Finland), Las Palmas
(Canary Islands, Spain), Le Havre (France), Lisbon (Portugal),
London (UK), Marseille (France), Montevideo (Uruguay), Montreal
(Canada), Naples (Italy), New Orleans (US), New York (US), Oran
(Algeria), Oslo (Norway), Peiraiefs or Piraeus (Greece), Rio de
Janeiro (Brazil), Rotterdam (Netherlands), Saint Petersburg
(Russia), Stockholm (Sweden)
Transportation—note: Kiel Canal and Saint Lawrence Seaway are two
important waterways
Transnational Issues
Disputes—international: some maritime disputes (see littoral states)