طنب الكبرى
In the aftermath of a series of attacks in 1808 off the coast of Sindh involving 50 Qasimi raiders and following the 1809 monsoon season, the British authorities in India decided to make a significant show of force against the Al Qasimi, in an effort not only to destroy their larger bases and as many ships as could be found, but also to counteract French encouragement of them from their embassies in Persia and Oman. The British mounted the Persian Gulf campaign of 1809, in which the Al Qasimi fleet was largely destroyed. The British operation continued to Lingeh on the Persian coast which was, like the Greater and Lesser Tunbs islands, administered by the Al Qasimi.