[Cry if I Wanna]

By converting TLAMs into missiles capable of penetrating thickly-armored vessels at sea..

Thickly armored? Are any warships thickly armored anymore?

[dainbramaged]

Are any warships thickly armored anymore?
Not like the Iowa Class battleships from WWII, which had 18 inches of laminated steel at the waterline.

[aegiscg47]

No, anything hit by a Harpoon or comparable sized SSM would be a mission kill at the very least. Most corvettes (which make up a sizable percentage of the world's surface forces) would be knocked out or burned to the waterline while frigates would be hard pressed to continue the fight. Larger ships like the Burkes and Ticos could continue the fight depending upon where they got hit, while carriers like the Nimitz class would shrug it off unless it's the size of Tomahawk or SS-N-22.