Semimounted reversible gang plough, comprising ploughing bodies mounted on a boom (12) with a front member (12a) and a rear member (12b) joined by a hinge element (13) and a control unit (19) for rotating the rear member (12b) relative to the front member (12a) and locking the hinge member (13) in a selected angular position thereof, wherein the boom (12) is rotatably mounted about a longitudinal shaft (8) of a support (9) with lifting wheels (10). The invention is characterised in that the means for rotatably attaching the boom (12) to the support (9) are integral with the rear member (12b) of said boom (12). The invention is useful for handling or transporting ploughs.