Hi Sathsivam
IIT Madras is one of the most premier and leading institutes in India for Naval Architecture and Ocean Engineering both. It is superior to Indian Maritime University. If you are interested in these courses and you are getting IIT-M, you should definitely go for it. It is a golden chance for your career.
All the Best. :)
Regular exam updates, QnA, Predictors, College Applications & E-books now on your Mobile