By authority, new-invented Cork Jacket, for prevention of drowning : The great advantage these jackets have over every thing of the kind ever attempted before, has occasioned them to be greatly approved and strongly recommended, by a number of gentlemen of the navy, as an article that no person should go to sea without, who wishes for their preservarion: they have this very great superiority over all others, that they may be worn with the greatest ease at sea, for any length of time, without incommonding the wearer the least in his business in the ship; and will be found of the greatest utility when a ship is lost near ship is lost near shore, as any person in them, though they cannot swim, may convey themselves safe to land.