Google is your friend, but...Constitution forbids offensive weapons essentially. Hence no cruiser missiles. As far as actual aircraft carriers, there's no point in Japan building any. It makes no sense strategically and financially. It doesn't even make sense for the UK.Yeah, like I ever actually read it. As opposed to hearing it cited in class as the reason Japan can't have its own aircraft carriers. I guess they can have the aircraft but not the carriers. I learned something new today at Sherdog U.