This is a screen shot of a map available for public usage at the US agency, National Oceanic and Atmospheric Administration, United States government. The shot was taken on December 11, 2015, for use in Wikipedia.
National Oceanic and Atmospheric Administration, United States government
2015-10-01
This is a  screen capture of the on-line viewable chart of the San Juan Bay available for public usage at <a href="//commons.wikimedia.org/wiki/NOAA" class="mw-redirect" title="NOAA">NOAA</a> : National Oceanic and Atmospheric Administration, United States government. The direct link to the map is: <a rel="nofollow" class="external free" href="http://www.charts.noaa.gov/OnLineViewer/25670.shtml">http://www.charts.noaa.gov/OnLineViewer/25670.shtml</a>