For Merchant Navy you can appear for IMU CET, AIM NET and JEE exam

Nautical science refers to the basic knowledge which is required to safely navigate and operate a ship. 

You can check the below colleges which provides B.Sc Nautical science

a) Academy of Maritime Education and Training, Karnataka

b) Vels University, Chennai

c) HIMT College, Chennai

d) GMK Institute of Marine Science and Technology, Chennai

Good Luck!!

Good Luck!!