On arriving at the port of St John's, Gilbert was blockaded by the fishing fleet under the organisation of the port admiral (an Englishman) on account of piracy committed against a Portuguese vessel in 1582 by one of Gilbert's commanders. Once this resistance was overcome, Gilbert waved his letters patent about and, in a formal ceremony, took possession of Newfoundland (including the lands 200 leagues to the north and south) for the English crown on 5 August 1583. This involved the cutting of turf to symbolise the transfer of possession of the soil, according to the common law of England. The locals presented him with a dog, which he named Stella after the North Star. He claimed authority over the fish stations at St John's and levied tax on the fishermen from several countries who worked this rich sea near the Grand Banks of Newfoundland.