Uragan-class monitor
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The Uragan class was a class of monitors built for the Baltic Fleet of the Imperial Russian Navy. The ships were built to the plans of the American Passaic-class monitors, a design that was tested on
Veschun («Вещун»)
Comparison of the turrets of the Passaic / Uragan class (left) and the later Canonicus class (right). The 15-inch Rodman guns for the Uragan class were produced at the Aleksandrovsk gun factory in Petrozavodsk.
229 mm naval gun M1867 in Suomenlinna.
Dahlgren gun
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Dahlgren guns were muzzle-loading naval guns designed by United States Navy Rear Admiral John A. Dahlgren, mostly used in the American Civil War. Dahlgren's design philosophy evolved from an accidenta
Uragan-class monitor
…to America along with Artseulov and Lessovsky to acquire gun technology. He returned in 1864 with technology for the production of 15-inch smoothbore Dahlgren guns, the type in use on the American Passaics. A new gun factory was established in Petrozavodsk in Russian Karelia. Production of Dahlgren guns was…
John A. Dahlgren standing next to a 50 lb (22.7 kg) Dahlgren rifle aboard USS Pawnee in 1865
A 9 in (229 mm) Dahlgren smoothbore naval gun and crew in the stern pivot position of USS Miami, 1864. (National Archives).
Dahlgren boat howitzer mounted in frigate's launch. The field carriage can be seen in stern
Dahlgren boat howitzer mounted on field carriage