The PROSAS Surveyor provided the most detailed sonar image of the steamship Portland yet made.

The PROSAS Surveyor provided the most detailed sonar image of the steamship Portland yet made.  Please visit http://stellwagen.noaa.gov/maritime/portland.html for more information on this vessel. Image courtesy of NOAA/SBNMS and Applied Signal Technology, Inc.

Download high-resolution image (jpg, 2.3 Mb)

Related Links

Stellwagen Bank National Marine Sanctuary 2010

Stellwagen Bank 2010: Photo & Video Log

NOAA Ocean Explorer Gallery