NAVY Colonel Muhammad Faisal now has an additional duty. The commander of the Batam Island Navy Base off Sumatra not only has to contend with safeguarding Indonesia’s maritime waters, but must also hunt down ships suspected of dumping waste in the seas around Riau.

In December last year, Muhammad’s forces detained the ship Arowana, which was boarded as it was dumping waste into Batam waters. According to Muhammad, tankers flying the Singapor