How many major sea ports are there in India?

1. Kandla Port

2. Mumbai Port

3. Jawaharlal Nehru Port Trust (JNPT)

4. Marmagao Port

5. New Mangalore Port

6. Cochin Port

7. Chennai Port

8. Ennore Port

9. Tuticorin Port

10. Visakhapatnam Port

11. Paradip Port

12. Kolkata Port