Japanese Naval Ordnance

5"/40 caliber

(Scanned from Skulski, "Battleship Yamato")

This was the standard Japanese heavy AA weapon of the war, being carried aboard a wide variety of vessels, and also used as a coast defence mount. It was a fairly good weapon, although its muzzle velocity was fairly unimpressive.

Bore5.0 inches
Weight3.0 tons
Length OA208.0 inches
Weight Projectile50.7 lbs.
Muzzle Velocity2379 ft/s
Max. Elevation+90/-8 degrees
Max. Range16,075 yards
30,970 ft. max. ceiling.
Rate of Fire8/min