Didn't quite understand myself what the above photo actually shows, so I made some "cut'n'paste"...
What better to do one early Sunday morning?
Both planes rotate fixed, so above photo shows front end of both planes sticking out.
A shot of other side of sub would show both rear ends of planes.
Images below:
Top image is with planes "extracted" - front of sub is up.
Middle image rotates planes in and
Bottom image show planes fully retracted:
Now there! That's how you give Keltos something to do on a lazy Sunday!
/edit:
The planes must rotate the
opposite way of what I show above!
Otherwise they would "collide" with the sidepanel shown between the two parts of the planes sticking out, if they rotate like I guessed.
The slot on the other side of the sub therefore
must be one long one...
And here it is!
If you look at the photo from post #60, you'll clearly see this side has just that!
I'll do some further investigation in my books... please don't run away...