LIONFISH 20 RWS (Leonardo image)
Two separate reports from Naval News (here and here) that four Island class cutters being transferred to the Greek Navy will be equipped with the Leonardo Lionfish 20mm Remote Weapon Station.
The weapon has a reported rate of fire of up to 1000 rounds per minute with 250 rounds on the mount, and an effective range of at least 2000 meters.
Unlike the Mk38 Mod2/3/4 mounts, traversing the electro-optics also requires training the gun.
Chuck Hill's CG Blog 
I assume that the left-hand link shows the bow. That’s interesting because the outward slant reminds me of the 1890s designs for an underwater ramming projection. Back (as I recall) in the 1880s and early 1890s ramming was still considered good tactics. We have proof of how effective it could be when the HMS Camperdown rammed and sank the HMS Victoria during maneuvers in the Mediterranean. (see “Admirals in Collision.) Unfortunately large rifled guns made it almost impossible to get close enough to ram—although at least one RN destroyer managed to ram a SMS dreadnaught at Jutland.
In this case the bow is primarily intended to reduce pitching, but it also keeps the waterline length.
Lots of examples of escort ships ramming submarines, for example USCGC Campbell rammed U-606.
During WWII British Destroyer Glowworm managed to ram German Heavy Cruiser Hipper.
https://www.warhistoryonline.com/instant-articles/a-british-destroyer-rammed.html
I believe the design of the bow, as well as the rest of the Greek frigate, is designed that way for stealth purposes, to reduce the radar cross section (RCS). Compare it to the bow of the stealth destroyers of the Zumwalt class here: https://upload.wikimedia.org/wikipedia/commons/4/43/160421-N-YE579-005_%2826543438313%29.jpg
I much prefer the subtlety of monitoring a potentially hostile target with my EO systems without having to train my gun on them.
Agreed, not a lot of penetration capability and the 20mm is too small for an airburst fuse too so not as useful for AAW and counter UAS.
Would like more than 15 seconds of fire for a 20mm….