It has become increasingly common in the Gulf of Aden , Indian Ocean . Police have tracked 11-plus incidents of actual or attempted piracy near Aden . The IMB has tracked at least 11 incidents of actual or attempted piracy near the Tanzanian coast this year . Around 200 oil tankers , warships and merchant vessels use the route annually . A multinational fleet has been patrolling the Indian Ocean and nearby waters .
It has become increasingly common in the Gulf of Aden , Indian Ocean . Police have tracked 11-plus incidents of actual or attempted piracy near Aden . Around 200 oil tankers , warships and merchant vessels use the route annually . A multinational fleet has been patrolling the Indian Ocean and nearby waters .