Assertion: main sail | /r/HasProperty | set in the plane of her keel
Facets:
Source sentences:
text: The sails of a brig with 2 masts are also similar to those on the main and fore masts of a ship, excepting the main sail, which is set in the plane of her keel, and is extended by a gaff at the head and a boom at the foot; the foremost leech being fastened by hoops round the main-mast.