Typically gunboats are armed to the teeth with missiles.
Cruisers only need 2 torp mounts at most, if any.
The BS's could do with some, maybe.
And the destroyers, especially the britonia one, should have at least 4 torp mounts, the kusari one probably doesn't need torps as it has 13 turrets, all you need to do is fit the 6 forward turrets with missiles and maybe 2 others as well, it'll do lots of damage on it's own.