A mast (мачта), c'est un vertical support for sails, so it can't be upper (or can it?).Originally Posted by kalinka_vinnie
Yards (реи (pl.), рея (sing.)) are fastened to masts, and they are the timbers upon which the sails are spread.
«От несваренья мысли слова во рту прокисли» this is Gerty's, I've never heard that before.