Corrival in Shakespeare

• 1598, Shakespeare, Henry IV, Part 1:
  

  By heaven methinks it were an easy leap
  To pluck bright honour from the pale-faced moon;
  Or dive into the bottom of the deep,
  Where fathom-line could never touch the ground,
  And pluck up drowned honour by the locks;
  So he that doth redeem her thence might wear
  Without corrival all her dignities:
  But out upon this half-facd fellowship!

Definition of Corrival

Adjective

corrival (comparative more corrival, superlative most corrival)

1. A fellow rival; a competitor; a rival; also, a companion.

This is the perfect name for a sailboat.  a rival and a companion.  Sometimes you love her, sometimes you hate her, but she's always with you.  In today's parlance, she might have been named "Fr-enemy"