This is probably a fabrication that has nothing to do with the US Navy. It appears to be associated with HAARP and other conspiracy theorists who are certain the US Government is behind plans to flood the world.
For a more credible depiction of the world in 100 years or more (note: beyond several generations into the future), see below.
Graphic: Maps of the Post Flood Future Geography
An alternative interpretation of the search that includes the piracy chart.
2008 U.S. Naval Power in the 21st Century