Via Facebook I obtained some photos, from a Ukranian friend, of how a couple of the five Ukranian 110 foot Island class cutters have been rearmed.
The intention was to rearm the ships with the MSI Seahawk 30mm, which reportedly will be the new USN Mk38 Mod4, but apparently it is not yet available, so instead, the ships have been armed with a Soviet era 25mm gun, the 110 PM. As can be seen, control is entirely manual and lacks stabilization, sensors, electro-optics, or any kind of firecontrol computer.
It’s not much, for a Navy facing off the Russian Black Sea Fleet, but at least it essentially restores the capability they had before the transfer. In some respects, it may be superior with a higher rate of fire and a heavier projectile.