Hi,

Yes, you can do Marine Engineering through JEE Main. 

You can apply to Indian Navy for a 4-year degree course under the 10+2 (B. Tech) Cadet Entry Scheme through JEE Main 2019. For more details, check the official website i.e. www.joinindiannavy.gov.in. 

Other colleges where you can do B.E./ B.Tech in Marine Engineering are CV Raman College of Engineering, Bhubaneswar; Chandigarh College of Engineering and Technology, Chandigarh; Marine Engineering and Research Institute, Mumbai; IK Gujral Punjab Technical University, Jalandhar; Yashwantrao Chavan Maharashtra Open University, Nashik; Gurukul Vidyapeeth Institute of Engineering and Technology, Patiala; Ganpat University, Mehsana; International Maritime Institute, Greater Noida etc. Check out other colleges, here: https://engineering.careers360.com/colleges/list-of-marine-engineering-colleges-in-india.

Hope this helps.

Cheers!