Fort Hamilton in Brooklyn in Kings County, New York — The American Northeast (Mid-Atlantic)

Projectiles for U.S. 20-inch Rodman Gun

Photographed By Bill Coughlin, August 13, 2009

1. Projectiles for U.S. 20-inch Rodman Gun Marker

Inscription. These thousand pound cast iron balls fit the huge gun in the park just outside the fort’s main gate. The 20-inch model of 1864 was experimental; the largest standard seacoast gun in use during our Civil War was the 15-inch Rodman.

Topics. This historical marker is listed in this topic list: War, US Civil. A significant historical year for this entry is 1864.

Location. 40° 36.498′ N, 74° 1.905′ W. Marker is in Brooklyn, New York, in Kings County. It is in Fort Hamilton. Marker is on Sheridan Loop, on the right when traveling east. Marker is on the grounds of Fort Hamilton. Touch for map. Marker is in this post office area: Brooklyn NY 11218, United States of America. Touch for directions.

Other nearby markers. At least 8 other markers are within walking distance of this marker. The Battle of Long Island (here, next to this marker); The Caponier (within shouting distance of this marker); Narrows Overlook – Fort Hamilton (about 300 feet away, measured in a direct line); The Battle of Brooklyn (about 300 feet away); Fort Hamilton Officers’ Club (about 500 feet away); June 1975 (about 500 feet away); Fort Hamilton (about 500 feet away); Spanish 24-Pounder (about 500 feet away). Touch for a list and map of all markers in Brooklyn.

Paid Advertisement

Click on the ad for more information.
Please report objectionable advertising to the Editor.

Click or scan to see
this page online

Projectiles for U.S. 20-inch Rodman Gun image. Click for full size.

Photographed By Bill Coughlin, August 13, 2009

2. Projectiles for U.S. 20-inch Rodman Gun

Markers in Brooklyn's Fort Hamilton image. Click for full size.

Photographed By Bill Coughlin, August 13, 2009

3. Markers in Brooklyn's Fort Hamilton

Rodman Gun Projectile Marker image. Click for full size.

Photographed By Bill Coughlin, August 13, 2009

4. Rodman Gun Projectile Marker

The marker is located near the Harbor Defense Museum at Fort Hamilton.

20-inch Rodman Gun image. Click for full size.

Photographed By Bill Coughlin, April 24, 2010

5. 20-inch Rodman Gun

This 20-inch Rodman Gun is found in John Paul Jones Park, located near the entrance to Fort Hamilton.

Fort Hamilton's 20-inch Rodman Gun image. Click for full size.

Photographed By Bill Coughlin, April 24, 2010

6. Fort Hamilton's 20-inch Rodman Gun

This 115,100 pound weapon used the projectiles pictured above. This Rodman Gun is one of only two ever produced.

Rodman 20-Inch Gun Tested at Fort Hamilton, October 26, 1864. image. Click for full size.

Internet Archive

7. Rodman 20-Inch Gun Tested at Fort Hamilton, October 26, 1864.

from Harper's Weekly, Vol. VIII, No. 412, Saturday, November 19, 1864.

Major Thomas J. Rodman image. Click for full size.

Internet Archive

8. Major Thomas J. Rodman

from Harper's Weekly, Vol. VIII, No. 412 Saturday, November 19, 1864.

Photographed By Bill Coughlin, September 20, 2009

9. 20-inch Rodman Gun

This is the only other 20-inch Rodman Gun. It is on display at Fort Hancock in Sandy Hook, NJ.

Credits. This page was last revised on January 31, 2023. It was originally submitted on April 10, 2010, by Bill Coughlin of Woodland Park, New Jersey. This page has been viewed 2,019 times since then and 40 times this year. Photos: 1, 2, 3, 4. submitted on April 10, 2010, by Bill Coughlin of Woodland Park, New Jersey. 5, 6. submitted on April 24, 2010, by Bill Coughlin of Woodland Park, New Jersey. 7. submitted on April 6, 2019, by Allen C. Browne of Silver Spring, Maryland. 8. submitted on April 7, 2019, by Allen C. Browne of Silver Spring, Maryland. 9. submitted on April 10, 2010, by Bill Coughlin of Woodland Park, New Jersey.