This is the list of private Institutes which offers B. Sc in Nautical Science: I am sharing the information from an unofficial website for you. Use it for your purpose. You need to make sure from which institute I want to take admission and then I will provide you the details of admission in the Institute.

B.P. Marine Academy
Indian Maritime University (IMU)
Academy of Maritime Education & Training (AMET University)
Vel's Academy of Maritime Education & Training
Tolani Maritime Institute (TMI)
Mumbai University