And as I've been reading in Fire In The Sky: The Air War In The South Pacific (http://www.amazon.com/Fire-In-The-Sky-Pacific/dp/0813338697/), also many other 2nd generation US WWII air superiority fighters (2nd generation are those after the Wildcat and P-40). Could also fire rockets, and the author says in theory (and assuming you hit the target, a bit of trick back then), a salvo of 5 inch ones would roughly equal a destroyer's broadside.