AK-726

Russia / USSR
76.2 mm/59 (3") AK-726
This gun was developed between 1954 and 1959 as the ZIF-67. It successfully went through extensive trials in 1958-59 and then through shipboard trials in 1960-62. Production started in 1963 with a total of 104 mounts being manufactured between 1958 and 1964.

This weapon was operated by a Fut-B control system which could control the guns against aircraft flying at speeds from 1,150 to 1,780 fps (350 to 650 mps) and at altitudes from 1,650 to 19,700 feet (500 to 6,000 m) and at ranges of up to 11 miles (18.3 km). It could also be used against ship targets at ranges up to 5 miles (8.2 km).

Used a monobloc barrel with spring receiver. The barrels were in a common cradle and the automatic mechanism operated from recoil forces. This gun is not water-cooled during the firing, but during breaks between firing sea water was pumped through the barrels. It usually took between two and three minutes to cool the guns. The turret has an unusually deep cleft which allowed the guns to be mounted aft of the center of the trunnion. This made them able to achieve high elevations.
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