6"/30 caliber Mark 1, 2, and 3 | |
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Type | Naval gun |
Place of origin | United States |
Service history | |
In service | 1885 |
Used by | United States Navy |
Wars | |
Production history | |
Designer | Bureau of Ordnance |
Designed | 1883 |
Manufacturer | U.S. Naval Gun Factory |
No. built |
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Variants | Mark 1, Mark 2 Mod 1 – Mod 3, Mark 3 Mod 0 – Mod 9 |
Specifications | |
Mass |
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Length |
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Barrel length |
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Shell |
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Caliber | 6 in (152 mm) |
Elevation |
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Traverse | −150° to +150° |
Rate of fire |
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Muzzle velocity |
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Effective firing range |
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The 6"/30 caliber gun Mark 1 (spoken "six-inch-thirty-caliber") were used for the primary battery of the United States Navy's dispatch vessel Dolphin with the Mark 2 being used in the secondary batteries for its "New Navy" protected cruisers Atlanta, Chicago, and Boston and the Mark 3 used for the primary and secondary batteries in the succeeding early protected cruisers in addition to secondary batteries in the "Second Class Battleships" Maine and Texas.[1][2]