Hammering the datum post in place (Dr. Hemmings).

Hammering the datum post in place (Dr. Hemmings). Image courtesy of Exploring the Submerged New World 2012 Expedition, NOAA-OER.

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Related Links

Exploring the Submerged New World 2012: July 24 Log

Exploring the Submerged New World 2012

NOAA Ocean Explorer Gallery