How to get placement after completing B.Sc Nautical Science

I have just completed B.Sc Nautical Science and STCW courses, STSDSD and OCTCO. I also have my CDC in hand. Need guidance in finding placements. If anybody (recruiter or anyone that has connections with recruiters)can help me get an opportunity to participate in any companies placement drive it would be appreciated. Is there any company that I can directly mail for an opportunity??