Mechanical Engineering

You can join some following courses:
Robotics computational motion planning,
Aerial robotics
Intelligent machining.

Hello Satyam,
Sorry to say but the placements of mechanical engineering in every college in India is on slight downfall so you have to work very hard to get placed in good companies. RIET is a good college and every facility you are seeking is available there. The average package of RIET is around 3.5 LPA.

Hello,
There are various colleges in Delhi and Noida that accept lateral entries. Here is the list of colleges:
1) GGSIPU, Delhi
2) Amity University
3) GL Bajaj
4) Shiv Nadar University
5) SRM University
6) Galgotias University
7) IIMT Noida
8) GNIOT

You may give it a try, but on the basis of this rank, you might not get mechanical in its main campus for sure. But there is management quota in SRM. That is the only way to get there.

Yes, you can get lateral entry in mechanical engineering.
For more information, click the links:
https://www.gbpuat.ac.in/academics/admissions/index.html
https://www.shiksha.com/college/govind-ballabh-pant-engineering-college-gbpec-uttarakhand-other-24262

You can join the distance education programme offered by various colleges, in which you only need to submit the assignment work.
You can refer this link:
https://www.shiksha.com/b-tech/ranking/top-engineering-colleges-in-india/44-2-0-0-0

Contact the shipyard HR office and let your college know.

I think, if you are interested in further studies, you can pursue M.Tech or MBA.