12-Pounder Dahlgren Boat Howitzer (Small) in Pembroke, New Hampshire
A 12-Pounder Dahlgren Boat Howitzer (Small) and a 12-Pounder Field Howitzer, Pattern 1841, are displayed in Pembroke, New Hampshire. These photos are by Larry Emm who originally posted them to the Facebook group Civil War Artillery. They are reposted here with his permission.
24-Pounder Dahlgren Boat Howitzer at the Erie Maritime Museum
24-Pounder Dahlgren Boat Howitzer Number 86 is displayed at the Erie Maritime Museum in Erie, Pennsylvania. It is a standard US Navy Boat Howitzer. However, it is marked “For Treasury Department” on the breech - indicating that it likely served on a US Revenue Service Cutter.
12-Pounder Rifled Boat Howitzers in Bladensburg, Maryland
Two US Navy 12-Pounder (3.4-Inch) Rifled Boat Howitzers are displayed at Fort Lincoln Cemetery in Bladensburg, Maryland. A nearby historical marker states that they are displayed in the earthworks of Fort Lincoln - an earthworks fortification built in 1861 as part of the network of defenses of Washington. The site is also near that of the War of 1812 Battle of Bladensburg. The two rifles are displayed on the remnant of Army type carriages rather than the naval landing carriages or boat carriages that they would have been mounted on in service.
US Navy 12-Pounder Boat Howitzer displayed in Westborough, Massachusetts
US Navy 12-Pounder Dahlgren Boat Howitzer Number 331 / 25 was manufactured as a 12-Pounder (3.4-Inch) Rifled Boat Howitzer in 1864. It served aboard USS Moccasin and USS Nantucket. Photos by George Morgan
Two US Navy 12-Pounder Boat Howitzers, Heavy, in Pottsville, Pennsylvania
Two US Navy 12-Pounder Dahlgren Boat Howitzers, Heavy, flank the Soldiers and Sailors Monument in Pottsville, Pennsylvania. They are:
US Navy 12-Pounder Dahlgren Boat Howitzer, Heavy, Number 364 manufactured by Ames in 1864. Weight as manufactured was 774 pounds.
US Navy 12-Pounder Dahlgren Boat Howitzer, Heavy, Number 365 manufactured by Ames in 1864. Weight as manufactured was 775 pounds.
US Navy 12-Pounder Boat Howitzers, Small, Numbers 7 and 12 in Gladwin, Michigan
Two US Navy 12-Bounder Dahlgren Boat Howitzers, Small, are displayed in Gladwin, Michigan. The two howitzers are:
12-Pounder Dahlgren Boat Howitzer, Small, Number 7. Weight as manufactured in 1857: 304 pounds.
12-Pounder Dahlgren Boat Howitzer, Small, Number 12. Weight as manufactured in 1858: 302 pounds.
US Navy 12-Pounder Boat Howitzer, Heavy, Number 155 in New Haven, Connecticut
US Navy 12-Pounder Boat Howitzer, Heavy, Number 155 of USS Sassacus is displayed in New Haven, Connecticut. It is one of four of the type displayed around a monument there. Many thanks to James Murray for taking these photos!
US Navy 12-Pounder Boat Howitzers at Manassas National Battlefield
Two US Navy 12-Pounder Dahlgren Boat Howitzers, Heavy, are displayed at Manassas National Battlefield Park. The two howitzers are:
12-Pounder Boat Howitzer, Heavy, Number 45 manufactured by the Washington Navy Yard in 1856. Weight as manufactured was 757 pounds. Served aboard USS Lancaster.
12-Pounder Boat Howitzer, Heavy. Unknown. Nearly all markings have been polished off this howitzer, so nothing can be known of its place of manufacture, weight, or service.
US Navy 12-Pounder Dahlgren Boat Howitzer of USS Constitution in Downingtown, Pennsylvania
US Navy 12-Pounder Dahlgren Boat Howitzer, Heavy, Number 39 is displayed in Downingtown, Pennsylvania. Many thanks to friend of the page James Murray for taking these photos!
Number 39 was cast in 1855 at the Washington Navy Yard. As originally cast it weighed 761 pounds. According to US Navy Records, it served aboard USS St. Lawrence and in 1877 aboard USS Constitution.
US Navy 12-Pounder Dahlgren Boat Howitzer at the Mariners’ Museum
A US Navy 12-Pounder Boat Howitzer, Heavy, is displayed at the Mariners’ Museum in Newport News, Virginia. It is mounted on a reproduction boat carriage. It may be registry number 386 which served upon USS Clematis in the Civil War and the monitor USS Manhattan in the 1870s and 1880s.
12-Pounder Dahlgren Boat Howitzer, Heavy, of USS Monongahela in New Haven, Connecticut
A US Navy 12-Pounder Dahlgren Boat Howitzer, Heavy, Number 128 is one of four of the type displayed around a monument in New Haven, Connecticut.
Many thanks to friend of the page James Murray for taking and sharing these photos!
12-Pounder Boat Howitzer, Heavy, Number 128 was manufactured at the Washington Navy Yard in 1862. As manufactured it weighed 750 pounds.
12-Pounder Dahlgren Boat Howitzer, Small, at the National Museum of the Marine Corps
A US Navy 12-Pounder Dahlgren Boat Howitzer, Small, is displayed at the National Museum of the Marine Corps in Quantico, Virginia. It was manufactured at the Washington Navy Yard in 1864. It is registry number 19, and as manufactured it weighs 305 pounds.
Number 19 is displayed on a landing carriage, and is part of an exhibit on Marine landing parties in the 19th Century.
12-Pounder Confederate Boat Howitzer at Gettysburg
A 12-Pounder Confederate Bronze Boat Howitzer, Heavy, is in storage at Gettysburg National Military Park. It bears the Tredegar Foundry Number “1169” on its muzzle
Many thanks to friend of the page Seth Lemley for inquiring about this piece and forwarding the NPS Photos and description.
National Park Service Photos, Gettysburg National Military Park, GETT 31170
US Navy 12-Pounder Boat Howitzer Number 134 in New Haven, Connecticut
US Navy 12-Pounder Dahlgren Boat Howitzer (Heavy) Number 134 was carried aboard USS Lehigh. It is possible that Number 134 is the boat howitzer depicted in two photos taken aboard the monitor during the American Civil War.
Many thanks to James Murray for sharing these photos!
The Rifled Boat Howitzers of Norfolk Naval Shipyard
Two US Navy 12-Pounder (3.4-Inch) Rifled Dahlgren Boat Howitzers are displayed near the 4th Street Entrance at Norfolk Naval Shipyard: Numbers 314 and 403. Two other rifled boat howitzers are nearby: Numbers 249 and 298.
Rifled 12-Pounder Boat Howitzer (Steel) at Trophy Park
While most of Dahlgren's Boat Howitzers were made of bronze, twelve of his rifled 12-Pounder Boat Howitzers were made of steel. Three of these survive, with one, Number 298, being displayed on an original carriage at Trophy Park at Norfolk Naval Shipyard.
US Navy 12-Pounder Dahlgren Boat Howitzer Number 36
A US Navy 12-Pounder Dahlgren Boat Howitzer (Heavy), Registry Number 36, is displayed in Trophy Park at Norfolk Naval Shipyard. It was cast in 1854 at the Washington Navy Yard. It served aboard USS Constellation from 1854 to 1866.
US Navy 24-Pounder Dahlgren Boat Howitzer at Shiloh
US Navy 24-Pounder Dahlgren Boat Howitzer Number 656 is displayed at Shiloh National Military Park. (Many thanks to James Murray for sharing these photos with us!) It was cast in 1864 by Ames. As manufactured it weighed 1305 pounds. This boat howitzer has a portion of its hammer still in place - and a something (a projectile?) lodged in the tube.
The Dahlgren Boat Howitzers of the National Civil War Naval Museum
Two US Navy Dahlgren Boat Howitzers, a 12-Pounder Smoothbore and as 12-Pounder Rifle, are displayed near the entrance of the National Civil War Naval Museum in Columbus, Georgia. The display allows visitors to note the differences between these two types.
12-Pounder Boat Howitzer of USS Pittsburg at Vicksburg
US Navy 12-Pounder Dahlgren Boat Howitzer, Heavy, Number 96 is displayed in the museum beside USS Cairo at Vicksburg. As the sign attests, the boat howitzer served aboard USS Cairo’s sister ship USS Pittsburgh. The markings on the tube show a weight of 759 pounds with 65 pounds preponderance (the howitzer is breech-heavy by this amount when placed on its carriage). It was manufactured at the Washington Navy Yard in 1862, and it was inspected and approved for service by John A. Dahlgren himself.