 With Île Bourbon secured in July 1810, the British now occupied a large fortified island base within easy sailing distance of Isle de France.Even before Île Bourbon was completely in British hands, Rowley had detached HMS "Sirius" from the invasion squadron with orders to restore the blockade of Isle de France.Shortly afterwards, "Sirius"'s captain Samuel Pym led his men in a raid on a coastal vessel moored off the southern side of the island.