The invention relates to a delta wing (1) for use as propulsion for a watercraft (2), a fastening element (4) being provided on the tapered leading end (3) of the delta wing (1), said fastening element being used to position the delta wing (1) in the front region (5) of the bow (6) of a watercraft (2). At least one engagement element (8, 9) is provided on the delta wing (1), with which element an adjusting device (7), which is associated with the delta wing (1) and which can be fastened on the watercraft (2), engages. The delta wing (1) can be pivoted by means of said device.
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