"Michal" wrote in message
...

There are obviously two rudders. The boat will be used for blue water
cruising.


My suggestion is that the two rudders should be connected together via a
mechanical system and then use one hydraulic ram to operate both rudders,
rather than trying to use two hydraulic rams to operate each rudder. I have
used the two ram approach and have found that they are never in alignment.
It is easy to realign them, but I had to do it far more often than I liked.

Rod