Hello Aspirant,

The best government colleges for Marine Engineering in South India are-

• Indian Maritime University,  Chennai
• Vels Academy of Maritime Studies, Chennai
• Coimbatore Marine College
• International Maritime Academy (IMA) Chennai
• Euro Tech Maritime Academy, Ernakulam
• Hindustan Institute of Maritime Training, Chennai
• R L Institute of Nautical Sciences, Madurai
• Srinivas Institute of Technology,  Mangalore
• Park college of engineering and technology, Coimbatore

I hope it helps

Thank you