You start the game with three submarines. Guide your submarine with
the mouse pointer. Press the mouse button to fire a torpedo upward toward
the surface. Press the keyboard space bar to fire a torpedo to the right.
Since it takes your crew some time to reload the torpedo tubes, you are
allowed a maximum of one torpedo at a time in each direction.
As the submarine captain, you must destroy all ten of the merchant ships
in the top row before you can move on to your next mission. Try not to torpedo
hospital ships. It's a violation of international law--and the consequences
can be pretty immediate. Skillful maneuvering will be necessary on advanced
missions in order to survive exploding depth charges, hostile torpedo fire, and
Your sub has a limited supply of fuel and torpedoes, and must be resupplied
frequently. A supply sub will pass by occasionally near the ocean bottom and
release a trained dolphin carrying fuel and torpedoes. By making contact
with the dolphin's supply pack, you can resupply your vessel. Whatever you do,
don't torpedo the dolphin! He has many friends in these waters, and
they won't take too kindly to it.