Ruderhead or Rudderhead: How To spell?
The word Ruderhead is misspelled against Rudderhead, a noun meaning "The upper end of the rudderpost, to which the tiller is attached."
Rudderhead has double "dd" is mispronounced as "d"Remember double 'DD' in between the strings Ru & erhead which should not be misspelled with single 'D'
Wrong Spelling:  Ru-d-erhead  Correct Spelling:  Ru-dd-erhead 
Check more misspelled words of Rudderhead to spell it correct.