Marine engineering includes the engineering of boats, ships, oil rigs and any other marine structure or vessel. Apart from this it also includes ocean engineering. a BE in Marine Engineering or Nautical Science and PG Diploma in Mechanical Engineering are the basic qualifications required to become a Marine Engineer. The minimum educational qualifications required for pursuing a Bachelor’s degree in Marine Engineering is your plus two marks. For qualifying you need to have a good percentage in subjects like Physics, Chemistry and Mathematics. This is a 4-year professional course. But there are colleges like Chennai School of Ship Management that offer Alternate Training Scheme (ATS which is for 3 years.

Physique is a criterion for qualification. Physical fitness is mandatory and there will be certain medical tests that are to be taken before entry into any college. The minimum height required is 150cms with a proportionate weight and proportionate chest with a minimum of 5-cm expansion. In addition to this there is also a medical fitness test for undertaking sea service. for this eyesight 6/6 without colour blindness is a must.

T S Chanakya, Mumbai, and the Marine Engineering Research Institute (MERI), Calcutta are some of the main training centers for Marine Engineering. There is a test called Indian Maritime University Common Entrance test. Park maritime academy CV ramen academy are some of the colleges participating in this all India test.  But Selection to T S Chanakya and MERI is through the Joint Entrance Examination (JEE) which is conducted annually by IIT. You have to apply for JEE like how you would normally apply and then you have to submit a separate application to the Directorate General of Shipping, Jahaz Bhavan, W.H Marg, Mumbai 400 001. 

A course in Marine engineering entails intense training to lead careers in ship repair and ship operation and function. The candidates will be given a knowledge of fundamental engineering sciences. They will also be exposed to specialized knowledge of theoretical and practical marine engineering aspects of marine engineering. A fairly basic knowledge of social sciences and humanities is also required. In addition to this, the course also enables the students to attain the criteria prescribed by Standards of Training, Certification and watch-keeping for sea-farers. The cut off for each college varies. Each year the cut off will depend on the difficulty of the question paper. There are different cut offs for the JEE exam and the IMUCET. There are colleges that admit students without an entrance test as well. Below is the details regrading the 2019 cut off.

https://engineering.careers360.com/articles/jee-main-cutoff

Refer this for more details regarding IMUCET

https://engineering.careers360.com/articles/imu-cet

for a better idea you can refer to the cut offs of previous year entrance tests. But do not depend largely on them as cut off vary according to the difficulty rate of the question paper.