Sink the Bismarck is a free print and play solo game, but I have played the game with two contestants before. Instead of rolling for both sides, just pick the side of the attacker or the defender.
The basic premise of the game is to sink the battleship Bismarck. The Sink the Bismarck PDF includes an 8.5 by 11-inch game board, twelve British Swordfish torpedo bombers, and instructions on how to play.
“The game ends once 5 torpedoes hit the ship. You'll will also score points for each aircraft and torpedo you destroy.”