Hey Aditya

Nautical Science is that branch of study where in the candidates studies about navigation and a ship operation. It mainly includes, Science (Physics and Chemistry), Mathematics and Physical training.  If you are interested in Navy, Merchant, Ships and Sea communication then you must look into this program. A student can pursue Bachelors of Science and Diploma in Nautical Science. The top University to pursue this course in India is Indian Maritime University (IMU).

All the best