Ruderpost or Rudderpost: How To spell?
The word Ruderpost is misspelled against Rudderpost, a noun meaning "The shank of a rudder, having the blade at one end and the attachments for operating it at the other."
The word Ruderpost is misspelled against Rudderpost, a noun meaning "The shank of a rudder, having the blade at one end and the attachments for operating it at the other."