Did you know that our marine transportation system includes 500,000 square nautical miles of navigationally significant waters? Over 1.34 billion metric tons of cargo, valued at $1.73 trillion, shipped in and out of U.S. ports in foreign trade in 2011. Those ports support, directly and indirectly, more than 13 million American jobs. Did you know that foreign trades through U.S. ports were valued at $1.5 trillion in 2016? Explore our new ocean economy portal!