Sorry for the long explanation but all these factors would probably mean: Iowa would land far more hits than Yamato but I think even if she got critical hits, she'd run out of ammo before she could sink anything. This alone allows the Iowa's to increase their accuracy by more than 20%. It allows the guns to be fired in any sea state and would be the precurser to a Gyroscopically stabilized gun. I had it explained to me during a tour of the Iowa I got by a Fire control Tech in GITMO bay in the 80's. The Iowa's have what would be deemed a fire control computer which was called a stable vertical which is a "Mechanical" computer. So all being even, it would come down to accuracy. Armor because Japan was still in it's early years of steel. Also Japaneese armor wasen't even close to the classes of U.S. That being said the 16" guns on the Iowas were deemed to have almost the same penetration as the Yamato's 18.1" guns at similar ranges. Battleship rounds at the apex of their trajectory were as much as 7 miles high and actually were known to pick up speed as they fell so they actually gained penetration over longer ranges from "U.S.
I looked at these links and the data is all book math. VT fuzed artillery shells intended for pre-impact airburst did exist, but their target (infantry) was much softer than even the most fragile of ships. The US did not even develop a VT fuze suited for the larger naval shells simply because of this the largest VT fuzed projectile in naval service during WW2 was the 6in/47's Mk34 HC shell, which could be fitted with the Mk47 Mod0 VT fuze. There was no such this as a VT 'proximity' fuze equivalent (which is what I presume you mean with 'ammunition proximity') for shells used on surface targets, for the simple reason that it would be useless against naval targets. Simple principle, but that made a difference both in the air defense of aircraft carriers, maximizing the killing enemies, both in naval battles.
While the Japanese ammunition to detonate it was necessary to impact with the target,Īmerican ones, even if not directly hit could seriously damage, exploding near the target. The same principle as that used for the AA. īut simply ammunition proximity, which exploded soon as you were in the vicinity of their targets The secret of the Americans were not the accuracy of their guns or radar.
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