The Treadwell 32-Pounders at the Washington Navy Yard
Two experimental wrought-iron (possibly wrought-iron and steel) 32-Pounders designed by Daniel Treadwell and manufactured circa 1844 are displayed at the Washington Navy Yard. They cannons were light and could be very strong - though not every example's welds held up. For naval service, they were too light.
The French 36-Pounder of the American Privateer General Armstrong
A French 36-Pounder is displayed in the National Museum of the United States Navy (photographed August of 2024). This cannon is a relic of a the "Battle of Fayal" between the American Privateer General Armstrong and the boats of a British squadron as well as the brig-sloop HMS Carnation.
US Army 42-Pounder, Pattern 1845, at the Washington Navy Yard
This US Army 42-Pounder, Pattern of 1845, is displayed at the Washington Navy Yard. It was cast at Bellona Foundry in 1860, and it is marked on the breech as weighing 8,590 pounds as cast. An inscription on the top of the tube notes that it was captured by the Navy from a "Rebel Battery Battery on the Potomac River in July of 1862."
The 6.25-Inch Rifle of CSS Florida at the Washington Navy Yard
A British manufactured 6.25-Inch Rifle captured aboard CSS Florida is displayed at the Washington Navy Yard. According to John C. Reilly's "The Iron Guns of Williard Park", the breech is engraved with the words "32-Pdr Rifled from Anglo-Rebel Pirate Florida." The left trunnion is stamped "Low Moor, 10666".
The 8-Inch Siege Howitzer of USS Pawnee
Two 8-Inch Siege Howitzers, Model 1841 (Olmstead et. al say "Pattern 1840") at the Washington Navy Yard.
Both were used in an attempted ambush of USS Marblehead on the Stono River on Christmas Day, 1863. One was subsequently carried as a pet aboard USS Pawnee.
The Mersey Gun at the Washington Navy Yard
The “Mersey Gun”, a 12-Inch Smoothbore manufactured from wrought iron by the Mersey Ironworks of Liverpool, England was ordered as a replacement for the “Peacemaker” which disastrously burst aboard USS Princeton in 1844. It is displayed at the Washington Navy Yard.
The 7-Inch Blakely Rifle of CSS Florida
A 7-Inch Blakely Rifle carried aboard the Confederate Navy Cruiser CSS Florida and a 7.5-Inch Blakely Rifle which was mounted in a fortification are displayed as trophies at the Washington Navy Yard.
The Dahlgrens of the Washington Navy Yard
Dahlgren’s shell gun and boat howitzer designs formed the core of US Naval armament during the American Civil War. It is fitting that three of his designs are displayed at the Washington Navy Yard: a 9-Inch Dahlgren Shell Gun, a 12-Pounder Boat Howitzer, and a 20-Pounder Bronze Rifle.
32-Pounder Rifle of CSS Teaser - Then and Now
A 32-Pounder of 57 Hundredweight which was banded and rifled by the Confederates is preserved as a trophy at the Washington Navy Yard. This cannon was captured aboard the converted tug boat CSS Teaser. The cannon was photographed after CSS Teaser's capture - allowing a "then and now" look at the cannon as well as the cannon's carriage, sights, and other accessories.
The 10-Inch Brooke Smoothbore of CSS Columbia
A 10-Inch Brooke Smoothbore is one of nine Brooke cannon displayed as trophies at the Washington Naval Yard.
The Brooke Rifles of CSS Tennessee
Four Brooke Rifles carried aboard CSS Tennessee at the Battle of Mobile Bay are displayed as trophies at the Washington Navy Yard. One other is displayed at Selma, Alabama. Another may be found at Naval Station Norfolk.
The Single Banded Brooke Rifles of CSS Atlanta
Four Brooke Rifles captured from CSS Atlanta are displayed as trophies at the US Navy's Washington Navy Yard.