A surgical drape (10) has a planar, flexible covering element (11) with an area (30) for accommodating a reference means (40) for a navigation system, the reference means protruding from the plane of the covering element. The area (30) has at least two deformable, elongated bar elements (18), which are connected to the covering element (30) and have two bar ends (27). The bar elements include the area (30) for accommodating the reference means (40) between the bar elements. At least one elongated shortening means (20) can be fixed on the covering element (11) and interacts with at least one of the bar elements (18), for reducing and/or fixing the distance of the two bar ends (27) from each other so that the area (30) for accommodating the reference means (40) is lifted out of the plane of the covering element (11).
