My friend! Thanks for your kind reply.
you may enjoy the detail of this ship on my Youtube with a beautiful violin music.
Actually it is not now, but it has been.
I originally planned and realized the rudder mechanism you said in real. But at completion of this ship, some string parts below the quarter deck tangled up when testing and it hasn’t worked.
It’s too complicated to recover it. So decided not to fix it. So sad
Thank you so much!!