As you are looking to get the colleges that are at the city of the Delhi and are approved by the DG of shipping-

Applied Research International New Delhi

Anglo Eastern Maritime Training Centre New Delhi

Aquatech Institute of Maritime Studies New Delhi

Fosma Maritime Institute and Research Organization New Delhi

Oceans XV Educational Trust New Delhi

Sriram Institute of Marine Studies New Delhi

You can select the college of your choice and let me know so that I can help oyu better.

Please stay in touch,