LazerHax

I've confirmed it, you are unable to place the short secondary barbettes in a wing-mounted/side-mounted configuration without them being on a mount already on the side, and even then it now doesn't let you place it on said mounts; Holding ctrl just snaps them to the centerline, and you're lucky to find a place where the game allows you to place it. Also, it seems placement of some barbettes is broken. You have the option to place barbettes in places, as well as the room, however the game simply won't let you on the basis of "mount" or "mount 2", whatever that means. Where you could previously place barbettes, you are now unable to. This can also happen with main towers, secondary towers, and funnels in some cases. The only way I can think of to fix this is to remove the "centerline only" restriction on all barbettes (minus destroyers because there's not enough room to do that anyway) and to not limit where you can place them along the length of the ship or what deck you want to place them on (quarterdeck, main deck, forecastle, etc,) except for the borders at the bow, stern, and sides.

Ecclesia-class battleship, armed with 5x4 432mm, 6x2 152mm, 20x2 102mm, and 12x3 51mm guns, at a speed of 26 knots.

Using ctrl works, but it has to be offset to the side and I physically cannot bring myself to do that; And no, it's not above the triple guns, it's that spot on the deck below the turret in that pic, right in the center.

The second one, right here: You should be able to put a secondary right there, and the tower does have a hardpoint for it, but for whatever reason the gun's hitbox and the tower's hitbox overlap, preventing the placement of the gun; At least, that's what I'm guessing is happening.

I do believe I tried that, but I might not've, will try again later today. Also, I've noticed some of the new British secondary towers have strange collision boxes, and the longer ones don't allow secondary turrets in places where they can clearly fit and have hardpoints where said turrets can, or at least should be able to, be placed, requiring them to be noticably offset. I can't get screenshots since I currently don't have access to my computer, but I'll upload some later when I'm able to.

Can't get an image right now, but it's like this: You can only place short secondary barbettes on the ship's centerline. I was hoping that you'd be able to place them off the centerline, like the superfiring 152mm twins on the midsection of the Sovetsky Soyuz-class and stern of the Nelson-class battleships, but it seems that's not possible unfortunately. The only hulls you can do this on are the French modern battleship hulls, and it's only one point on the stern and can't be placed freely.

I've noticed you can't place the short secondary barbettes off the centerline. A little sad about that.