The user needs to provide the filenames of its potential maps as program arguments.

Once the player has quit a game he can resume it. Every unfinished game gets saved to the save.sav file.

In-game functionalities:

K / Kamikaze kill - take one of your opponent's ships down at the cost of one of yours

R / Randomize - reposition all of your enemy's ships

D / Destroy in advance - play 10 random turns for both players