[see-wur-th ee]

adjective, sea·wor·thi·er, sea·wor·thi·est. (of a vessel)

constructed, outfitted, manned, and in all respects fitted for a voyage at sea.
safe for a voyage at sea.

Origin of seaworthy

First recorded in 1800–10; sea + -worthy
Related formssea·wor·thi·ness, nounun·sea·wor·thi·ness, nounun·sea·wor·thy, adjective Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for unseaworthy

Historical Examples of unseaworthy

  • Moreover, when there is time to use the boats, they are too often found to be unseaworthy.

  • The Geier entered Honolulu on Oct. 15 in an unseaworthy condition.

  • The “Coal-Coffin,” albeit an unseaworthy vessel, is a picturesque object.

    Shifting Winds

    R.M. Ballantyne

  • In these, overloaded, unseaworthy, they battled down the long chain of lakes.

  • He has never since been heard of, nor has any portion of his unseaworthy vessel been picked up.

    The Sea

    Jules Michelet

British Dictionary definitions for unseaworthy



not in a fit condition or ready for a sea voyage



in a fit condition or ready for a sea voyage
Derived Formsseaworthiness, noun
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for unseaworthy



1807, "in fit condition to encounter heavy weather at sea," from sea + worthy. Related: Seaworthiness. Old English had særof "hardy at sea."

Online Etymology Dictionary, © 2010 Douglas Harper