Obama made the jab Monday at his final debate with Mitt Romney.
"You mentioned the Navy, for example, and that we have fewer ships than we did in 1916," Obama said in a pointed jab at the GOP nominee. "Well, Governor, we also have fewer horses and bayonets because the nature of our military's changed. We had these things called aircraft carriers where planes land on them. We have these ships that go underwater, nuclear submarines. So the question is not a game of Battleship where we're counting ships. It's 'What are our capabilities?'"
That was in response to an allegation from Romney that "our Navy is smaller now than at any time since 1917."