Which course is better in merchant navy field among DNS, B.Sc nautical and B.Tech marine engineering?

If you want to go in the deck side of the ship, then go for DNS or B.Sc. Nautical Science. And if you want to go for the engine side, then opt for B.Tech Marine engineering. There is scope in all the 3 courses and finally after completing the course you will end up in a ship. DNS is a 1 year Diploma

You can explore about - IMU CET. CUSAT CAT. TMISAT. You can do any of these courses to make a career in merchant navy as per your financial budget. But B.Tech in marine engineering is best if you could do.