Ok, have a look at http://jnlwp.defense.govand there is a story...

Ok, have a look at http://jnlwp.defense.gov
and there is a story about
"Navy Equips Unmanned Boats with Non-Lethal Weapons for Fleet Experiment".

This is from the story:

NORFOLK (NNS) -- U.S. Fleet Forces Command (USFF) directed a follow-on fleet experiment this week off the shoreline of Fort Eustis to explore capabilities for unmanned surface vessels (USVs) to deploy non-lethal weapons during maritime security and force protection operations.

"Equipping unmanned surface vessels with non-lethal weapons will further expand the capabilities of our Naval forces to confront an increasingly complex set of threats," Rear Adm. Scott Craig, USFF Deputy Chief of Staff for Fleet Policy, Capabilities Requirements, Concepts, and Experimentation said. "Results from this experiment will be relevant not only to the U.S. Navy, but also to other Services, coalition partners and allies."

Operating in autonomous and semi-autonomous modes, the small militarized boats are equipped to employ a directional acoustic hailer, eye dazzling laser and flash-bang munitions; each non-lethal weapon was carefully-orchestrated to respond to a set of threatening behaviors from intruder vessels.



Now there is two pictures associated with this story the first is a picture of RHIB called the NAVY Sea Fox.

The second picture is The U.S. Navy unmanned surface vessel, Powervent, owned by Naval Surface Warfare Center Combatant Craft Division (NSWC CCD),

Have a look at the front of the boat there is a launcher. From what I can see it is very similar to a MST launcher. The only difference is it has two rows of 5 (total 10) as apposed two the USMC three rows of 5.