40mm Navy gun

[Niner]

Looking through some old photographs and thought I'd post about the 40mm gun just for the heck of it. This rapid firing gun shot down Japanese planes in the Pacific in WWII. It also had a unique bit of equipment to assist in aiming, the mark 51.

Here is a link to one site that tells a little more.

http://www.usstexasbb35.com/40mm_naval_gun.htm

Photos taken on the USS Alabama battleship as it is now on public display.