What Lostboy said 😀
You have a better chance getting started closer to home. Middle East or Far East companies. Heck, theres a lot of work going on off India just now, you might find a local subsiduary of an international ROV company open up down there
You will have a slim chance of getting work with any UK or Eupropean companies as long as you continue to live in India.
Also meantime, try and get a job locally that will get you practical experience. It will not only help your experience but also your CV. A Degree is very good but they dont teach much in the way of practicals? e.g. how to solder?
Someone with a Degree was once described to me as "they can tell you the square root of an orange – but they cannot peel it". You now need to work on increasing your practical experience, get a job to do that while you are applying and seeking ROV work – dont sit without a job on the hope you will get one in ROVs anytime soon.