Hey Ramprasad,

You have a scored quite well a rank but in your question you did not mention clearly that you score this rank in which exam : IIT JEE, AIEEE, AICET and IMU CET. And the students who desire to get admitted into one of the naval engineering college have to fulfill certain criteria’s. A student must qualify their senior secondary exams in the field of physics chemistry and mathematics with an aggregate of 60% and 50% in English in either 10th or 12th exam the aspirant has to take up an entrance test for getting into the desired college with which he or she should also possess certain physical and mental abilities laid down for admission and have to take up certain physical tests too.

Further if you want more information on this course related to fees, placement, salary and more go to the link I provide below: 

https://collegedunia.com/courses/bachelor-of-technology-btech-naval-architecture-and-ship-building

Hope this helps.

All the best.