Mizenmast or Mizzenmast: How To spell?
The word Mizenmast is misspelled against Mizzenmast, a noun meaning "The hindmost mast of a three-masted vessel, or of a yawl-rigged vessel."
Mizzenmast has double "zz" is mispronounced as "z"Remember double 'ZZ' in between the strings mi & enmast which should not be misspelled with single 'Z'
Wrong Spelling:  mi-z-enmast  Correct Spelling:  mi-zz-enmast 
Find more wrongly spelled words of Mizzenmast to spell it well.