I think the Countermeasure launch tubes ARE pointed forward. If memory serves, the Ohio class launchers (Buick Roadmaster fender holes!) do the same. In the photo, the leading edge of the sail (fin) is to the right. Then again, our friends across the pond DO drive on the wrong side of the road!! ;^) There are not normally "caps" installed, but you would see the ends of the C/m's themselves,, just inside each hole. The C/m end would look like a sealed metallic mailing tube tucked inside the opening.
"If you ignore the problem long enough, it will go away. Even flooding stops eventually!"