Pocket Sub: Deluxe Edition

From the publisher:

Pocket Sub is the submarine themed game which is highly strategic, quick, yet small enough to fit in your pocket. Players take on roles as cold war submarines engaged in a battle of wits by placing their own and avoiding others' mines on a nautical battle field. Each turn players will move any of their 3 submarines around the grid system and lay a mine in any position where the sub moved through or from. As the minefield gets crowded, players must use strategic yet forward planning, to ensure their submarines remain on the battlefield at the end of the game to ensure victory!