Did some looking into the new naval gun systems comming soon to a platform near you.
My old stand by the Mk45 Md1 has been redone to the new Mk 45 md 4
Which fires a guided missile type of projectile in excess of 60 mi and a rate of fire of 16 to 29 rpm.
Lockheed Marins milinium gun.
A culmination from LM and Orlikon to replace the CIWS on littoral ships.
It comes in calibers from 37 mm to 57mm and the projectile release sub munitions ant a rate of fire of 1000 rpm. Nasty,nasty.
Last but not least the advance rail system.
One projectile one hit. Distroys by pure kenetic energy.
A projectile up to 50 lbs with a muzzle velocity of 5600 mph.
Yea thats MILES PER HOUR. Mach 7. may be placed on the Zumwalt class.
Dont know if this will hapen but then again who knows for sure.