Cook christened his landing place Possession Island , and ceremonial volleys of gunfire from the shore and Endeavour 's deck marked the occasion .
On 22 August , Cook was rowed ashore to a small coastal island to proclaim British sovereignty over the eastern Australian mainland .
Cook christened Cook 's landing place Possession Island , and ceremonial volleys of gunfire from the shore and Endeavour 's deck marked the occasion .
On 22 August , Cook was rowed ashore to a small coastal island to proclaim British sovereignty over the eastern Australian mainland .