Meanings of thoroughly seaworthy in English

A fishing boat should be thoroughly seaworthy and also have plenty of room.

Altogether the craft was made thoroughly seaworthy.

The boat, notwithstanding its long period of uselessness, was perfectly water-tight and thoroughly seaworthy, although still unpleasantly low at the stern.

Blackened with smoke, exposure, and hard usage, it was yet thoroughly seaworthy, and although it rolled about until well under weigh, was not uncomfortable.

"We must not think of launching her, or of building another boat; but we may improve our craft, so as to make her thoroughly seaworthy."