Piracy has become increasingly common in Indian Ocean , the Gulf of Aden . Experts have tracked 11-plus incidents of actual or attempted piracy near Dar es Salaam . more than 1,000 oil tankers , freighters and merchant vessels use the route annually . `` Who can stop them ? A multinational fleet has been patrolling the Gulf of Aden and nearby waters .
Piracy has become increasingly common in Indian Ocean , the Gulf of Aden . Experts have tracked 11-plus incidents of actual or attempted piracy near Dar es Salaam . more than 1,000 oil tankers , freighters and merchant vessels use the route annually . A multinational fleet has been patrolling the Gulf of Aden and nearby waters .