Question for the Naval Engineers

[Agento]

I apologise if I'm posting this in the wrong thread I'm a very new member, this question is for a college assignment.

Hello engineers and personnel that work on submarines and naval architecture. I'm having a hard time finding how many degrees of movement stern rudders have whilst in operation. From my understanding naval design and fluid dynamics state that stern rudders are most effective between +35/-35 degrees of movement however I found this info on US naval sites and I'm not sure if this is translates to the British navy as well.

TLR Do stern rudders only move between +35/-35 degrees whilst in operation?

if the information isn't allowed for the general public I understand, thank you in advance.

 

[WreckerL]

That would be a correct number.

 

[PedlarP]

From my understanding naval design and fluid dynamics state that stern rudders are most effective between +35/-35 degrees of movement

As Wrecker says, that number is correct. I believe the degrees of movement for the bow rudders is different!