Abstract: This device for furling a sail of a ship on a boom (1) connected to a mast (2) by means of articulation means (3) and mounted so that it can rotate about itself, comprising means for driving the boom (1) in rotation (7) in order to furl the sail on the latter, is characterized in that the said means for driving in rotation (7) are arranged on the end of the boom (1) away from the articulation means (3). These driving means comprise a drum (8) integrally fastened to the boom (1), around which is arranged a line for driving (10) the said drum, this line being connected, for example, to the steering station of the ship by return means (11, 12).