The Kari Class Frigate (pardon my naming scheme) is a cold war design inspired ship with a functional Mk. 23 inspired arm launcher, capable of reloading its missiles (although I got tired and just went with 4 in the "magazine", but I hope you get the concept)

Controls:

AG-1 for the gun and aa
VTOL for forward
Roll for turning

Now for the arm launcher (tis a bit complicated)

1) Turn off LandingGear

2) Press L-01

3) Turn the throttle 3-5%, 6-10%,11-15%, 16-20% (I used the throttle slider for the missile reload because I don't use it on ships, and theoretically, you can have like 100 in a magazine for each different percentage if you are up to it)

4) Turn on LandingGear

5) Press SM-1A to shoot the missile

to restart the whole process, just repeat step 1

I have created this like, 2 years ago and just thought of posting this build right now. I do think there are other ways to streamline the process, but this is the best that I could do (with my limited funkytrees knowledge). I also have a version in the works with an ASROC thing although idk when I'll be done with it.