To join a Merchant Navy college, you need to meet the basic eligibility first. After Class 12 with Physics, Chemistry and Maths (PCM), you can apply for courses like B. Tech Marine Engineering, B. Sc Nautical Science or Diploma in Marine Engineering. Most reputed colleges take admission through entrance exams such as IMU CET, JEE Main or institute-level tests. After clearing the entrance, you also have to pass a medical fitness and eye-vision test (6/6 eyesight is required). Once admitted, you need to complete the academic training and the mandatory shipboard training to get placement on vessels. So focus on entrance preparation and choose a DG-Shipping approved college for better career opportunities.