From the back of the box
New Weapons. New Waters. The Most Desperate Battle of W.W. II Continues...
This expansion disk brings experienced Aces of the Deep U-boat Captains a fearsome new weapon and challenging new waters. The Type XXI Electro-boat, available here months before its historical introduction, will help you even the score with vastly improved submerged speed, range, depth, fire control, and radar. This secret weapon of the Kriegsmarine is your to command as the Battle of the Atlantic continues into the Mediterranean -- history with you at the helm!
- Take command of the seas in the deadly, top-secret Type XXI U-boat. Join wolfpacks firing with lethal accuracy from a depth of 100 meters, then outrace the pursuers while submerged!
- Penetrate the British gauntlet at Gibraltar to stalk the Mediterranean. Submerge and drift silently on the current or the destroyers will blast you into the depths.
- Attack with new acoustic homing torpedoes or the sophisticated LUT pattern-running "eels."
- Undertake new Historic Missions that let you take on the British carrier Ark Royal, the battleship Barnham, and several others!
- Wreak havoc on Allied convoys and escorts in career or single-mission mode.
- Cruise with additional period music and startling new sound effects.