1-3/8 diameter, 7/16 bore. With ferrules and caps. Will fit all makes.
dunno, those drunk lads were blatantly fuckwits, but i kind of feel sorry for the pirates.
Yes, I've seen some of the back story about why they do what they do, but a sodding great French navy frigate with guns all over it looks not very much like a) a cruise liner or b) a cargo ship, really.