I keep thinking there ought to be a way to plonk M109 turrets onto ships, with appropriate corrosion protection. Stab aboard a constantly moving ship would be a challenge, of course.
M109 would allow guided projectiles eliminating the need for stab.
I think that it makes more sense to go the other way: leverage existing, long range and guided 127mm ammunition and then sabot it out to 155mm to get the longest production runs that are practical.
VULCANO 127mm available rounds are:
- Ballistic Extended Range (BER) unguided multirole ammunition with multi function programmable fuze;
- Guided Long Range (GLR)ammunition with IR sensor for anti-ship role;
- Guided Long Range (GLR)ammunition with IMU+GPS autonomous guidance for precise NFS actions (a Semi Active Laser sensor can be fitted as option).
BAE is saying they can get 90km for the guided range from existing 127/64 LW and Mk 45 mounts and potentially over a hundred km firing from the M109 ECRA.
The whole era of limited production run, specialized guns is over: R&D, now for ammo in addition to the gun system itself, is a chore and we've seen over and over how low production run, high tech weapons just death spiral into nothing.