[SunkenCiv]

Thanks DDDfD!

Radar ranging was on some US ships quite early; Admiral Willis Lee used them to great effect off Guadalcanal late 1942.

Note the Kirishima near the left edge:

https://en.wikipedia.org/wiki/Ironbottom_Sound#/media/File:Wrecks_in_the_Ironbottom_Sound.jpg

[OldHarbor]

Admiral Willis 'Ching' Lee - The Ultimate Sharpshooter

Drachinifel’s channel on YouTube has a good episode on Admiral Lee.