QF 1-pounder pom-pom autocannon aboard the USS Vixen, c. 1898-1901.
Fullsize image: https://s3-us-west-1.amazonaws.com/h...n_fullsize.jpg
Previously:
Rheinmetall BK-5 autocannon - photos
1889 naval gun breech - video
Naval gun autoloader - GIF
Loading a 16-inch gun in 1944 - GIF
1917 naval gun bore machining - photo
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