Hi
The Sabb diesel engines was two blades and you could order pitch
propellor that leveled the blades for use in sail boats , --- this was
a rare but usefull combination for pitch propell but there was some
marked for pitch propellor in this application and you could maby find
one second hand in scandinavian boats markeds ---
From what I remember the bigggest Sabb with pitch propellor was 22Hp
maby 30 Hp but the trust bearing are build into the propellor mounting
outside the boat and the pitch are done by moving the propellor sharft
fore and aft just a few cm. Bigger pitch propellor without build in
trust bearing, had a hollow sharft with a movable rod at the center to
turn the pitch. I don't know if the Sabb engines are even manufactored
anymore but a lot are around as they are reliable reasoable slowrunning
engines build for boats, and then ofcaurse there must be some
propellors with sharfts around from worn out engines ,but please
remember that even you get a trust bearing with the propellor ,you
still need some mechanic to force the sharft to make the propellor
"turn".