The diameter of the Rudder Shaft Post measured exactly 50 mm using a digital caliper which means the circumference should be 157.08 mm
The wealth of information on this forum never ceases to amaze me.
Thank you all for your knowledgeable and detailed responses.
All the best,
SM #466 - s/v Rita Kathryn
On The Hard - Severn Yachting Center - Hayes, VA