CVs have an advantage over Shore batters in that in Land mode they automatically turn and adjust elevation to hit the area selected.
The reason why the CV gunnery is so much powerful in this respect is because all one has to do as a CV gunner is to .wingman a buddy who flys over the target and says "mark" - at that time the gunner clicks on the wingmans dot, Land mode keeps the turrets always aimed at that spot, pull the trigger and shells fall right on target - works very well against CVs and Land targets. All the gunner has to do is pull the trigger repeatedly.
Shore batters, however, have no such ability and they are at disadvantage in this respect.
If a historical reason is needed, fire control would have had several spotters along the shore line which would observe the angle to the target, using the technique called "triangulation", the range could easily be calculated.
In Normandy, the German shore defenses had their guns ranged to specific crossfire kill zones. When the enemy entered these established zones, the gun fire was right on and deadly (in this case, I'm speaking about the zones on the beaches). Something that would be useful against LVTs.
Could some kind of ranging device be added for shore batteries to back the batteries more effective at hitting targets?
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