Re: SM Skeg
I had to remove the rudder in the past weeks for a succesfull repair.
From what I saw the nylon bushing is just water lubricated. Those 2 screws on the side hold the bushing in place.
Olaf Bauer made a description of the rudder removal which may help you too: https://amelyachtowners.groups.io/g/main/files/AMEL%20SM2K%20Rudder%20Removal/Rudder%20removal%20at%20a%20AMEL%20Super%20Maramu%202000.pdf
sv malaka Queen
SM2k #348 @ Northern Ireland