The main functions of the Institute as stipulated under section 4 of the Act establishing the DMI are:-
- To provide facilities for the study of and training in the principles, procedures and techniques of basic training of seafarers, marine engineering, navigation, management of shipping enterprises, special skills and knowledge of pilotage or tug handling and such other related subjects as the Board of Governors may from time to time decide;
- To engage in research, consultancy services and publications into theoretical, operational and organizational problems and training needs in the subjects specified in paragraph.
- To establish and foster closer association with other colleges, academies and institutions both nationally and internationally.
- To perform all such other functions as stipulated in DMI Act.