Hello.
Well there are various good institutes for naval architecture course you can refer accordingly the list is given below in order of their rank.

• IIT Madras
• IIT Delhi.
• Delhi  maritime academy.
• School  of ocean engineering, Chennai.
• IIT  Kharagpur.
• Andhra University.
• Cochin University.
• Academy  of maritime education, Chennai, etc.

For more details you can go with the link provided you below:
https://engineering.careers360.com/colleges/list-of-naval-architecture-colleges-in-india
Best of luck.