I'm surprised that the Ship Description Summary doesn't include an item for the propulsion type. Not just blades, but start there. Shroud? Dual screws? Multiple prop's, etc. Maybe as a dropdown note, very nice, once I found them. This is important and generally well known at the time. Particularly if it 'sinks' with a sonar model. I dropped a why? (sync's).
I had my first sub-sub collision. No damage, to my surprise.
Is there a dual screw Seawolf model for the '84 campaign?
https://en.wikipedia.org/wiki/USS_Seawolf_(SSN-575)