Because of this, Sahure has been credited by past scholars with establishing the Egyptian navy. It is recognized today that this is an overstatement: fragmentary reliefs from Userkaf's temple depict numerous boats, while a high seas navy must have existed as early as the Third Dynasty. The oldest known sea harbor, Wadi al-Jarf on the Red Sea was operating under Khufu. Finally, there is the distinct possibility that some of the reliefs are copied from earlier examples. Nonetheless, Sahure remains the earliest known ruler to have depicted, and thus possibly made use of, sea power for transporting troops over the Mediterranean sea, to Syria.