How to join MN after graduation(Btech)

I am in my final semester of Bachelors(in Electronics Engg), and I want to join MN. Would kindly anyone tell me the various courses (if any for my specialisation) I can pursue to get into Merchant Navy.
 I am really confused which course to pursue as I was earlier wishing to go with DNS leading to Bsc Nautical Science, but there is too much rush in the DNS program because everyone...
MERCHANT NAVY FORUMCAREER IN MERCHANT NAVY