Dahlgren gun [SEP] named after
Dahlgren gun
Dahlgren guns were muzzle-loading naval artillery designed by Rear Admiral John A. Dahlgren USN (November 13, 1809 – July 12, 1870), mostly used in the period of the American Civil War. Dahlgren's design philosophy evolved from an accidental explosion in 1849 of a 32-pounder being tested for accuracy, killing a gunner. He believed a safer, more powerful naval cannon could be designed using more scientific design criteria. Dahlgren guns were designed with a smooth curved shape, equalizing strain and concentrating more weight of
and fourteen Dahlgren guns. The 10-inch Dahlgren weighed and could fire a shell up to a range of at +19° elevation. The nine-inch gun weighed and could fire a shell to a range of at an elevation of +15°. The eight-inch Dahlgren had a range of at an elevation of +10° with a shell. It weighed .
Description Steam frigate service.
"Roanoke", named after the Roanoke River, was laid down at the Norfolk Navy Yard in May 1854 and launched on 13 December