• 6-inch gun at Battery Gunnison, Fort Hancock, NJ, restored and manned by volunteers of the American Ground Forces Association
  • Fort Point, Golden Gate National Recreation Area, California
  • Fire control tower at Fort Mott State Park, NJ
  • 12-inch mortar at Battery Craighill, Fort Hughes, the Philippines
  • Firing the 3-inch guns of Battery Irwin, Fort Monroe, VA, 1920s
  • Fort Warren, Boston Harbor, MA
  • 15-inch Rodman smoothbore, Fort Pickens, FL
  • Battery Crockett, Corregidor Island, the Philippines
  • The Advanced Redoubt at Fort Barrancas, FL
  • Firing the 12-inch mortars of Battery Anderson, Fort Monroe, VA, 1920s
  • The ruins of Battery Geary, Corregidor Island, the Philippines
  • Battery Langdon, Fort Pickens, FL
  • Fort Delaware, Delaware City, DE
  • Fort Baker, Golden Gate National Recreation Area, California
  • Fort Michie, NY
    Fort Michie, Great Gull Island, NY
  • Fort Trumbull, CT
    Restored casemate at Fort Trumbull State Park, CT
  • Fort Worden, WA
    Firing the 10-inch Guns of Battery Benson, Fort Worden, WA, 1930s
  • Fort DeSoto, FL
    12-inch mortars at Fort DeSoto County Park, FL
  • fort chamberlin
    6-inch gun at Battery Chamberlin, Golden Gate National Recreation Area, CA
  • Fort Morgan, AL
    Fort Morgan State Park, AL
  • Fort Columbia State Park, Washington State
  • Fort Casey, WA
    One of the 10 inch guns of Battery Worth, Fort Casey State Park, WA
  • Firing a 12 inch gun on M1917 barbette mount at Battery Kingman, Fort Hancock in the 1920s
  • fort adams
    Fort Adams State Park, Newport, RI
  • 16-inch gun
    16-inch gun on proof mount, Aberdeen Proving Grounds, MD
  • Farley Bar in restored barracks at Fort Baker, California
  • 14 inch gun of Battery Gillespie, Fort Hughes, the Philippines


The CDSG is a non-profit corporation formed to promote the study of coast defenses and fortifications, primarily those of the United States of America; their history, architecture, technology, and strategic and tactical employment.


Welcome to the NEW CDSG Website. To go to the old CDSG Website please click here.


The primary goals of the CDSG are:


Membership in the CDSG includes four issues of the organization’s two quarterly publications: the Coast Defense Journal and the CDSG Newsletter.

CDSG webmaster: webmaster@cdsg.org