Talk:Type 22 Surface Radar Kai 4/@comment-25283939-20151007131249/@comment-26140831-20160418124942

It really depends if you can afford it.

Don't upgrade this before you have upgraded most of your important other stuff (Guns, AP shells, eventually Daihatsu... Stuff like that)

However, this thing gives a tremendous boost to accuracy which will get especially handy in night battles, because Accuracy (at least it's highly speculated) improves critical hit rate. And you really really want to hit your Torpedo Cut In ;)

So I'd say before you upgraded bunches of your armory and are at the point in the game where your after-event plans consist of running 5-4 for ranking while leveling Souryuus this might be a bit too late-game for you.