Cheats:
 
 To enable cheats, press 'B' to display the communications panel,
 type 'cisco sez' and press [ENTER]. 
 
 To use the codes, press 'B', type the code, and press [ENTER].
 
 Cheat Result 
 BE MY BUDDY - Makes target your ally.
 BOOM - Destroys target (does not work on helicopters).
 DROP ANCHOR - Stop submarine.
 EAT LEAD - Super torpedo.
 ENGAGE CLOAKING DEVICE - Makes sub invisible to  enemies.
 FLIP HER - Turns sub around.
 HEAL ME - Repairs damage.
 IRAN CONTRA - Resupplies all weapons but  Tomahawks.
 LETS TODDLE - Speed to flank (35 knots).
 ON YOUR BUTT - Teleports sub near target.
 SEE THEM - Shows all targets on sonar.
 SHIELDS UP - Invulnerable.
 TAKE HER DOWN - Moves sub to bottom of ocean.
 TAKE HER UP - Moves sub to surface.
 WARP TO WAYPOINT - Go to waypoint. Press 'W' to complete waypoint.
 ZEPPELIN - Sub can fly.