[mcoca]

Some comments:

b) Rudder not shown on damage screen, is it possible for it to be destroyed without notification?

I've seen this (posted in a couple of threads about it). Once destroyed it's not repaired even at a refit. I have the savegames and can provide them and/or screenshots if needed.

g) The main or observation periscope does not rotate in external view, always points forward.

Confirmed, with both periscopes, actually.

j) The bridge compass on the Gar class and possibly other subs if off by 90 degrees.

This happens in the Gato too. Also, none of the three compasses in the control room work, they don't move at all. The only one that works is the one in the conning tower.

k) The radar defaults to focus mode when the player moves to one of the displays.

I think the radar is always in focus mode by default, it's just that the AI operator turns it around, just like the sonarman does.

l) Some boats have no second man at the right hand dive planes station but rather somewhere else in the station. The slot gets filled only when battlestations is selected.
Gar class boat left dive plane indicator points to dive when surfacing, right hand indicator mirrors so it points to nothing.
Gar class boat – crewman MAY rotate the wheels the wrong way.

Yes, and the number of rivets is way off

m) If you leave the AA gun stations as the boat goes underwater the crew can be seen manning the AA gun underwater from the external view.

Was this taken from my comment on the bug thread? Otherwise, consider this a confirmation. To reproduce 1) Order your crew to the guns, 2) Then man the gun yourself, 3) Dive 4) As you pass 25 feet, go to external view. The crew at the AA guns will stay no matter how deep you go.

This is more a glitch than a bug, though. It's really hard to trigger by accident, since waiting a few more feet until you are sent to internal view will prevent it.

n) Surface radar sweeps only at up to around 8x time compression (may be system dependent) at higher speeds the radar turns off.

I see this, too, but at a higher TC, maybe 256x. You still get new contacts, though, it's just that the old ones are not updated. Not very serious, IMO.

Regarding Skweetis' problem in the conning tower, I just checked and it seems fine to me. When the boat dives, I see more of the ceiling (i.e. the view is level with the horizon and the boat is going down), and when it surfaces, I see more of the deck. Maybe I'm confused about which side is which in the internal view?