adjective, sea·wor·thi·er, sea·wor·thi·est. (of a vessel)
Related formssea·wor·thi·ness, nounun·sea·wor·thi·ness, nounun·sea·wor·thy, adjective
Examples from the Web for unseaworthy
One of the Dutch vessels captured was to go as almiranta; but it did not make the voyage, as it was unseaworthy.
The remnant was crowded into a single small, unseaworthy brigantine under the command of Francisco Pizarro.South American Fights and Fighters|Cyrus Townsend Brady
We feel for them almost as if we heard a man, under pressure, admit that his last ship was unseaworthy.Merchantmen-at-Arms|David W. Bone
Fayal offers especially favourable opportunities for the obsequies of an unseaworthy ship insured beyond her value.The Last Voyage|Lady (Annie Allnutt) Brassey
The truth is, Henderson, I am a strained and unseaworthy craft, for whom the harbor and shore are the safest quarters.My Wife and I|Harriet Beecher Stowe