6 inch/40 Mark 4 gun

The 6"/40 caliber gun Mark 4 were used for the secondary batteries of the United States Navy's Indiana-class and Illinois-class battleships. They were also used as the main battery on the Cincinnati-class protected cruisers.

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"/40_caliber_naval_gun Wikimedia, Wikidata
6"/40 caliber gun
naval artillery, rifled breech loader, Washington Navy Yard, United States Navy, United States, 

12 inch/35 Mark II gun, 12 inch/50 Mark 7 gun, 13 inch/35 Mark I gun, 13 inch/35 Marks 1,2 gun, 16 inch/45 calibre gun, 16 inch/45 Mark 6 gun, 16"/50 caliber Mark 2 gun, 3 inch/50 calibre gun, 30 mm Breda-Mauser, 5 inch/54 caliber Mark 42 gun, 5 inch/54 caliber Mark 45 gun, 6 inch/30 gun, 6 inch/30 Mark 3 gun, 6 inch/35 calibre Mark III gun, 6 inch/47 calibre Mark 16 gun, 8 inch/30 calibre gun, 8 inch/35 calibre Mark IV gun, Canon de 24 C modèle 1864, Dahlgren gun, naval artillery, QF 6 pounder Driggs-Schroeder gun, rifled breech loader, USS Oregon, 

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Location: KML, Cluster Map, Maps,

Frameless

USS Massachusetts 6 inch gun and crew LOC 4a14402v

USS Columbia deck gun circa 1898

Type	Subtype	Date	Description	Notes	Source
commons	image		USS Massachusetts 6 inch gun and crew LOC 4a14402v		Commons
commons	image		USS Columbia deck gun circa 1898		Commons