steerage vs steersmanship

steerage

noun
  • The art of steering. 

  • The section of a passenger ship that provided inexpensive accommodation with no individual cabins. 

  • The effect of the helm on a ship. 

steersmanship

noun
  • The role or status of a steersman. 

How often have the words steerage and steersmanship occurred in a corpus of books? (source: Google Ngram Viewer )