Marine Engineering

B. Sc in Nautical Science is a 3-year undergraduate course which is split into 6 semesters. Each year consists of 2 semesters and contains a thoroughly practical approach to all the concepts of Nautical Technology.
Whereas, Bachelor of Technology (B.Tech.) in Marine Engineering is a 4-year undergraduate course which is split into 8 semesters. Each year contains 2 terms, with each term a minimum of 6 subjects or more depending on the university.
A B.Sc. in Nautical Science fresher can take home a monthly salary of Rs. 50,000 as a deck cadet. Whereas, Entry-level junior engineers get between Rs. 25,000 60,000 per month in their training phase which depends on the company and role.
Comparing both the course, B.tech in Marine Engineering is better than B. Sc nautical science course. But, selecting a course depends on which field you are interested in.
Check both the links for full details about scope, job opportunities, syllabus, entrance exam, etc.
https://campushunt.in/blog/best-b-tech-in-marine-engineering-colleges-in-maharashtra/
https://campushunt.in/blog/best-bsc-nautical-science-colleges-in-maharashtra/
Thanks

Hello Sanskriti,
Tolani is a very well known name in academic circles for their Marine engineering courses. They have also a very vibrant and dynamic placements cell. Invariably majority of the students get placed by the institute. I think you should not worry on this account at least at the moment seeing the trend in the cargo movement by ships today and in the coming years. I am attaching a link that will give you all the required information about different dates of the admission process of Tolani.
https://www-shiksha-com.cdn.ampproject.org/v/s/www.shiksha.com/college/tolani-maritime-institute/amp/tmisat-exam?amp_js_v=a2&_gsa=1&usqp=mq331AQCCAE=#aoh=15498643152468&_ct=1549864328045&referrer=https://www.google.com&_tf=From %1$s&share=https://www.shiksha.com/college/tolani-maritime-institute/tmisat-exam
Best wishes to you.

Yes, you can pursue marine engineering through IIT.
Marine Engineering deals with manufacture, design and operation of ship machinery and engines. There is good scope of marine engineering courses in India. This is the best field for getting excellent government jobs. Marine engineering has gained great popularity in India. Plenty of students are attracted towards this advanced branch of engineering. Scope of marine engineering courses offers remunerative career options on and off shores. The employment opportunities are available in Merchant Navy, Navy and manufacturing industries. Offshore job opportunities are available in recruitment in ports, government jobs. The marine engineers can also work as teachers in the educational institutes. There are numerous institutions established in various states of India, like, IIT Mumbai, IIT Madras, IIT Kharagpur, International Institute of Maritime Science, College of Engineering, C V Raman College of Engineering, etc.

Yes, you can pursue marine engineering after Diploma in mechanical. Candidates who have completed a Diploma in any stream of Engineering (Marine, Mechanical and Electrical) with 55-60% in final year can join the B.Tech. Course from the 2nd year as part of the Lateral Entry scheme. Here a list of Best Marine Engineering colleges in Tamil Nadu, most of the colleges mentioned below are some of the best marine engineering colleges in Chennai:
Academy of Maritime Education & Training (AMET)
Noorul Islam Centre for Higher Education
Indian Marine University, Chennai
Sri Venkateswara College of Engineering
Vels Institute of Science, Technology & Advanced Studies (VISTAS)
GKM College of Engineering & Technology
International Maritime Academy
Hindustan Institute of Maritime Training (HIMT)
Southern Academy of Marine Studies
Coimbatore Marine College
IIT, Madras.