image
Comparison of Imagery and Map
Comparison of satellite-derived imagery (left) and map generated using the multibeam sonar system on the ship (right).
Official websites use .gov
A
.gov website belongs to an official government
organization in the United States.
Secure .gov websites use HTTPS
A
lock (
) or https:// means you’ve safely connected to
the .gov website. Share sensitive information only on official,
secure websites.