Originally Posted by Old-Timer

My buddies and I used to play this game and Gunship on the C64 for hours at a time!
We each had a profile saved and would compete by taking turns as the sub commander. Seeing this is really just a single player game and there were three of us who wanted to play the game together cooperatively (this was before the days of LAN gaming) we devised our own method to turn this monsterous game into a multiplayer.
I had one of those airsoft revolvers that shot out these spring-loaded plastic shots. There were only six of them that could be loaded at a time and the gun looked very real (you wouldn't be able to get by with this or even buy this toy pistol now in today's "P.C." world). [Now, don't try this next part at home kiddies -- this was over twenty years ago]
One of us would take turn as the sub commander and would be in charge of issuing commands. The sub commander was not allowed to touch the computer controls at all and would watch the action take place over the shoulders of his two crewmen. The other two players would each take a role as a crewman. One in charge of weapons systems and sonar and the other in charge of navigation and countermeasures. So you had two guys sharing the keyboard and the way it divided up really worked out well. Then you had the commander barking out orders. Crewmen were not allowed to disobey a direct command but they could offer suggestions and recommendations to the commander. If a crewman was disobedient he was "shot" with a plastic pellet and would be immediately replaced by another crewman played by the same player. If a crewman were "retired" by the last shot from the commander's weapon then that player was out of the game altogether and the captain would then have the choice to either turn total control of the sub over to the remaining player or he could take the place of the retired player himself.
We did kind of the same thing with Gunship. Let me tell you, it was a blast and we had some very memorable moments that we all three still recall to this day even though we don't get to see one another nearly as often as we used to back then. To this day, one of the guys still has the nickname "Ceasefire" because everytime he took to the air in Gunship he would open fire on friendly targets by mistake and the C64 version would flash a message on the screen which read "Ceasefire! Friendly troops have been hit!" We'd yell out "Hey, Ceasefire! They're talking to you!" Good times! :-)

Originally Posted by Unregisteredd

The game works, but now I don't know what key to press to confirm an acoustic signature. It's not on the keyboard overlay in the PDF. Enter doesn't work. Shift+enter doesn't work. The manual says to "hold down the Vessel Signatures key [which is shift?] while pressing the Confirm Choice key [which is apparently not enter?]." I've tried most key combinations that aren't marked and nothing seems to work.