oceangoing vs seagoing

oceangoing

adj

  • Travelling out to sea. 

  • designed for use on ocean voyages 

seagoing

adj

  • Travelling out to sea. 

  • Fit for sailing on the high seas. 

  • Made for, or used on the high seas. 

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