Hello,

To join marine engineering after B.Tech in mechanical engineering:

1 Check eligibility for marine engineering programs.

2 Research and apply to marine engineering programs.

3 Prepare for and take any required entrance exams.

4 Complete the application process.

5 Participate in the selection process.

6 Upon admission, follow instructions for enrollment.

7 Undergo specialized training in marine engineering.

Hope this helps you,

Thank you

https://www.careers360.com/courses/marine-engineering-course