I think i found a bug with the rudder.
1. Played as Montana and Yamato and Lexi, so it might be for all ships
2.-4. Whenever i press "Q"/"E" twice fast, after the rudder is maxed for right/left, it shifts to the other direction (left->right, right->left) and locks there (effect is the same if i press "Q" four times; locked from maxed right to maxed left). The same thing occures for the "speed". Press w twice and you go to full speed. press s twice and you go reverse
5. no crashes. The rudder is not stuck like discribed before (if i tap a or d the rudder shifts back to neutral)
I hope this post is understandable, my english is not that good. Sorry for that. If there are questions, feel free to contact me.