In early battles this gave them a decided edge. Beginning with the sea battles off Guadalcanal our Navy had radar but the commanders did not understand what it could provide so we continued to get pounded at sea.
Once we refined (PPI) radar and trained our sailors we took away the edge that the Japs had enjoyed and began to dish it out at range long before even the best lookout could see us.
Thanks, I knew the Japs were known to be good at night fighting early on.
It sounds like they were good because they really worked at it.