8"/30 caliber Mark 1 & 2 Naval Gun | |
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Type | Naval gun |
Place of origin | United States |
Service history | |
In service | 1886–1906 |
Used by | United States Navy |
Wars | |
Production history | |
Designer | Bureau of Ordnance |
Designed | 1883 |
Manufacturer | U.S. Naval Gun Factory |
Produced | 1886– |
No. built |
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Variants | Mark 1 Mod 0 and 1 and Mark 2 Mod 1 |
Specifications | |
Mass | 29,100 lb (13,200 kg) (without breech) |
Length |
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Barrel length |
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Shell | 260 lb (120 kg) |
Caliber | 8 in (203 mm) |
Elevation | −5° to +20° |
Traverse | −150° to +150° |
Rate of fire | 0.5–1 round per minute |
Muzzle velocity | 2,000 ft/s (610 m/s) |
Effective firing range | 14,000 yd (13,000 m) at 20° elevation |
The 8"/30 caliber gun (spoken "eight-inch-thirty-caliber") formed the main batteries of the United States Navy's "New Navy". They were a US naval gun that first entered service in 1886, and were designed for use with the first three protected cruisers, Atlanta, Boston and Chicago.[1]