Continuity mistake: When the old guys are getting the battleship ready, there are two on the walk way turning the crank to withdraw the path. When the angle changes to show the walkway moving, the two guys vanish.
Continuity mistake: When Sam and Mick are on the mountain, they meet Dr. Zapata who emerges from behind a bush with a twig in his hair above his forehead. In the next cut the twig has moved to the top of his head, and in the next it is gone.
Other mistake: When they load the last shell to hit the island Hopper orders it to be taken from turret 3 to turret 2, but turret 3 is later seen firing.
Continuity mistake: When the USS Sampson gets blown up by the aliens, the front of the ship explodes first, then the rear, but in the next sequence the rear explodes first, then the front.
Answer: No. The last battleship was stricken from the Naval Vessel Register and decommissioned in 2006.
MasterOfAll