Navy MkVI patrol boat. It it can fit on this, it can probably fit on any cutter WPB or larger. (Sorry I could not grab a photo of the launchers–you have to follow the link.)
Lockheed has new vertical launchers for JAGM, the missile that is replacing the Hellfire. Presumably it can also use the Hellfire. They seem particularly appropriate for Coast Guard applications, being small enough to mount 16 missiles atop the deckhouse of the Navy’s 85 foot MkVI patrol boat. They have a small foot print and are probably pretty light. They can be mounted in multiples of quad missile launchers; each quad launcher appears to be no more than 2′ x 3′ x 8′ tall. (That is my estimate, but I think if anything they are probably smaller. The missile itself is 7.1″ in diameter and 71″ long. For reference beam of the MkVI is only 20’6″.)
The Hellfire/JASM can successfully engage a large spectrum of potential maritime terrorist threats from small fast highly maneuverable craft (with one hit) to larger ships (assuming multiple hits), helicopters, drones, and some fixed wing aircraft.
There are two naval versions, one for mounting directly on deck and one for mounting below decks with just the muzzles above deck.
These would be an excellent addition to the Webber class being sent to replace the 110s in PATFORSWA. Probably could fit one or two quad launchers forward of the deckhouse on the Webber class on either side of the 25mm Mk38.
Thanks to Malph for brining this to my attention.