Diving Alarm???
 

Anyone remember the diving alarm in Sub Command? Is there a way to add that back in? Or even better what about a collision alarm?

The diving alarm can be changed by altering the .agg files for each platform using the audio editor program available for DW, but I'm not familiar with how to do this.

A collision alarm unfortunately cannot probably be put in on the user end.

There is a more realistic diving alarm sequence sound-file on my site. I use it in come of my custom missions. If you want to have it all the time, you'll need to add it to the .agg file as LuftWolf mentioned.