We have a 2014 Moomba Mondo and when out of the water the steering wheel at the 12 o'clock position has the rudder straight and true however when in the water cruising at around 3000rpm the steering wheel is in the 10:00 o'clock position to maintain a straight path. Noticed this over several seasons but I guess my OCD finally got the better of me.
Is this normal?
Fins all look straight so am guessing it's just prop rotation??
Anything else to look for?

Thanks and regards.

BruceR, Melb AUS.