pl23_line6828.jpg
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https://www.noaa.gov/media/digital-library-photo/pl23line6828jpgDescription
Dalhgren cannon mounted at Fort Jefferson. The cannon was able to be rotatedthrough 360 degrees to be able to fire in any direction.
Credit
NOAA Teacher at Sea Program, NOAA Ship NANCY FOSTER
Photographer
Amy Orchard
Display Date
2014 September 19
Location
Florida, Fort Jefferson
Collection
America's Coastlines
NOAA Affiliation
Arizona Sonora Museum