Yes Definitely You can apply, NIOS is a recognized board of studies, candidates who qualify from this board are considered eligible for admission in Indian Maritime University, provided you fulfill all other eligibility criteria mentioned in the guidelines of IMU. There is no discrimination between NIOS and others, But as in past, many fraud activities reported so they are very strict regarding documents so to avoid any issue Please gather all documents Provided by NIOS to prove that you are a genuine candidate.