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Dahlgren guns were muzzle-loading naval gun designed by a United States Navy Rear Admiral John A. Dahlgren (November 13, 1809 – July 12, 1870), mostly used in the American Civil War. Dahlgren's design philosophy evolved from an accidental explosion in 1849 of a 32 lb (14.5 kg) gun being tested for accuracy, killing a gunner.
John Adolphus Bernard Dahlgren (November 13, 1809 – July 12, 1870) was a United States Navy officer who founded his service's Ordnance Department and launched significant advances in gunnery. Dahlgren devised a smoothbore howitzer, adaptable for many sizes of craft and shore installations.
Dahlgren was established in the spring of 1918 as a Naval Proving Ground. Its recorded first work, the firing of a 7-inch (178-millimetre)/45 caliber tractor-mounted gun, occurred on 16 October 1918, which is recognized as the official founding date.
The 18"/48 caliber Mark 1 – United States Naval Gun was the initial name and design for a large caliber naval gun in the early 1920s. After the Washington Naval Treaty prohibited the development of guns larger than 16 in (406 mm), the gun was relined and finished as a high velocity 16"/56 Mark 4 gun.
The Dahlgren Heritage Museum is open to the public. It promotes the history, traditions, heritage, and culture of the U.S. Navy at Dahlgren, Virginia and the surrounding community. Its key holdings include a scale model of a Civil War-era Dahlgren gun, the propeller from the first radio-controlled, unmanned flight, and Norden bombsight. [7]
A 24-pounder is a gun firing a shot of 24 pounds weight, a mass of 11 kg. Examples include: 24-pounder long gun, including various designs of artillery used during the Age of Sail; M1841 24-pounder howitzer, used by the United States Army from 1841 to 1865; A size of Dahlgren gun used during the American Civil War
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Dahlgren gun, type of smooth bore cannon designed by the Admiral and used by the U.S. Navy; Dahlgren Affair, failed mission to assassinate leaders of the Confederacy; Dahlgren system and dahlgrenogram, created by Swedish-Danish botanist Rolf M. T. Dahlgren (1932–1987) USS Dahlgren (TB-9), Torpedo Boat No. 9/TB-9/Coast Torpedo Boat No. 4