Flat-bottomed eolian barge of Le Blanc (1798) for invading Great-Britain, proposed to Napoleon I
drawing uploaded by <a href="//commons.wikimedia.org/wiki/User:Trec%C4%83torul_r%C4%83cit" title="User:Trecătorul răcit">Trecătorul răcit</a>
anonymous drawing, 1798