For some reason my dive planes sometimes animate incorrectly.
It seems like the dive bar (don't know what else to call it) sticks out, but the plane itself doesn't move the way it should.

Note that this doesn't occur every time I dive.

See the photo for details.
Note that this is SH4 1.5, on the porpoise sub. 1941

Edit: K I lied, it does happen every time I dive.
It requires a restart of the game to fix.

It would seem that this is just another bug in the game. I too get this. The planes work until I save the game and then load the save. After that they stop animating correctly. Things still seem to happen as they should, only they dont animate properly. Lets hope they fix this. I know I am not buying another thing from Ubi until they make this game work properly. They have had almost a year now since release to straighten this stuff out.

I have the same issue, and would bet that everyone does. With any sub actually, after saving a game, WHILE SUBMERGED, when the game is reloaded, dive planes will not lower. Although the sub responds as if they do.
Does anyone know of a way to fix this problem? It definitely takes away from the submersiveness of the sim. (no pun intended..lol)

I saw that too, the game is loaded with bugs like that. Diving planes are a big part of submarines, that animation should work currectly. Anybody who knows about submarines would think thats pretty unrealistic to not have those working right. When I got the game I got the 1.4 patch right when I got. Has any one seen the giggly water bug? Jello water, gee I wonder if I can jump off and flop around on it. Or how about the crew with missing eyes? Or there eyes are way off to the side. Looks like there about to die or there the undead. Zombie crew! That's just what I always wanted! I picked up SH3 about 2 years after it was released. When I patched there was not nearly as many bugs as SH4. I really wish they would fix these issues, it takes the enjoyment out of the game. rant rant rant....Just fix it