Dahlgren, John

Dahlgren, John (Adolphus Bernard)

(1809–70) naval officer, inventor; born in Philadelphia. Classically educated, he joined the navy as a midshipman in 1826 and served in the Mediterranean; he served later as an assistant in the U.S. Coast Survey. From 1847 on, as ordnance officer at the Washington Navy Yard, Dahlgren experimented with naval weaponry; by 1851 the yard had begun to produce a cannon of his own design. His 11-inch Dahlgren smoothbore guns were carried aboard many U.S. warships, including the famous ironclad Monitor. As a rear admiral, he commanded the Union's South Atlantic Blockadina Squadron (1863–65) and was commandant of the Washington Navy Yard at his death.
The Cambridge Dictionary of American Biography, by John S. Bowman. Copyright © Cambridge University Press 1995. Reproduced with permission.
References in periodicals archive ?
John Vinton Dahlgren, John and Madeleine's son, was is in the Georgetown class of 1889.
Sources: Dahlgren, John A., Boat Armament of the U.S.