Yesssss!, UZO and periscopes are finally destructible ! Although, clicking on UZO station after it's been destroyed will cause CTD sometimes but i can live with that... I was experimenting with wrong periscopes... I should use wire from the beginning...
Also, i have an idea how to make some compromises because of the save problem. For example, one rudder will be 100% more durable then the other. That way, one will be destroyed with single good shot so if you do save, on next reload you'll have sub with just single rudder. This will affect sub's turn capability...Same for propelers and dive planes...