Yes, Man O'War 4; I'd forgotten to check it and there it was. You've got a point re the mounts - they're big for the 20mm, more like a Bofors, but I'll stick with the Oerlikens. I'm onto the Norwegian version of the II, and I will try to get started on the I asap, but I'm snowed under at present.
BTW, how's the cricket....