|Caption||40mm Bofors quad mount aboard USS Iowa, New York Navy Yard, New York, United States, 9 Jul 1943 ww2dbase|
|Source||ww2dbaseUnited States Navy via navsource.org|
|Photos on Same Day||9 Jul 1943|
|Added By||C. Peter Chen|
|Added Date||15 Apr 2012|
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|Licensing||Public Domain. Please support Paul Yarnall's effort with his navsource.org project.
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26 Jun 2013 02:15:33 AM
The dedicated US late-war AA mounting was the quadruple 40mm Bofors; it was fitted in large numbers to virtually every major US vessel. It was a water-cooled power-driven mounting, the configuration being a twin; quads comprised pairs of twins in a common tub. Shell weight was about 2lb (0.9kg) and rate of fire has been measured at a figure of 150-175 rounds per minute for each barrel of the mounting.
Source: Tony Gibbons. The Complete Encyclopedia of Battleships and Battlecruisers pp253, (Salamander 1983)