Tested it out earlier. You can man the rear 5.25" like normal and the front gun is 100% AI. If you are broadside and want to save ammo, man the rear one yourself and hold fire while your fore gun crew goes nuts. Or just keep your conning tower between the rear gun and the target. Edit: And they have separate ammo caches.
Q: How do we designate to the gun crews which ship to fire on? Do they automatically lock onto the one you have 'locked' your periscope to?
BTW - the 5.25" is a WICKED gun. It rips some SERIOUS holes in enemy merchants!
