With the establishment of the Second Dutch West India Company in 1675, the government structure was revised. The area under the authority of the Director-General was redefined as "the Coast of Africa, from Sierra Leone all exclusively to 30 degrees South of the equator, together with all the islands in between," thereby nominally reinstating the claim on the territories lost in this area to the Portuguese. The title of the Director-General was concurrently changed to "Director-General of the North and South Coast of Africa." This larger claim was not primarily meant to reclaim Luanda and Sao Tomé from the Portuguese, however, but merely to establish authority over Dutch trade in the area. This was especially relevant for Loango, from which the Dutch began buying slaves in large amounts from the 1670s onward. Until the liquidation of the Dutch West India Company in 1791, the title of the Director-General and the limits of jurisdiction remained the same.