USV

 Which might stand for unmanned surface vehicle or unmanned surface vessel or un-crewed surface vessel appears to the the collective noun for self driving boats . And distinct from self drive hire boats, USVs are boats which operate autonomously without a crew.

I'm pretty sure this is one such USV and that I posted about it back in 2024 and thanks to eagle eyed friend Greg we have some much better photos.

The hull form is quite narrow, almost like a rib without the tubes and the tumble-home above the hull deck joint seems to speak of a mostly low profile above the water which is probably good for military purposes.

 Difficult to tell from the pictures but using the car in the background seems to be 25 to 30 feet.