On board
On board adverb - On a ship, train, plane or other vehicle.
Under sail and on board are semantically related. In some cases you can use "Under sail" instead an adverb phrase "On board".
Under sail
On board and under sail are semantically related. You can use "On board" instead an adverb phrase "Under sail".
Mutual synonyms
Cite this Source
Under sail and On board. (2016). Retrieved 2026, August 11, from https://thesaurus.plus/related/on_board/under_sail
On board & Under sail. N.p., 2016. Web. 11 Aug. 2026. <https://thesaurus.plus/related/on_board/under_sail>.
Under sail or On board. 2016. Accessed August 11, 2026. https://thesaurus.plus/related/on_board/under_sail.
Google Ngram Viewer shows how "on board" and "under sail" have occurred on timeline