AN OFF-DUTY policeman trawling for fish, not felons, helped net a Chinese shipping company whose vessel dumped garbage in Port Phillip Bay. In the first prosecution by the Environment Protection Authority for garbage pollution in Victorian waters, the company and the ship's former master were yesterday penalised a total of $52,000. Hong Kong-based Tian Ren Company Ltd and captain Zhu Hanjie, 43, since sacked over the incident, were charged after now Inspector Glenn Davies saw a large plastic bag fall from the container ship Sky Lucky on January 19 last year.