Final Coordination Conference (FCC) of Maritime Security Exercise-2021 (EXER MARSEC-21) was successfully conducted on 28-29 June 2021 in hybrid (virtual & in-person) format, and a total of 34 participants representing various maritime interested stakeholders from the military, governmental institutions, and academia attended the proceeding / discussions. The aims of the event were to provide an update on the way-ahead of EXER MARSEC-21 to interested stakeholders and possible target audiences, academia, and supporting COEs, to harmonize views concerning the draft Scenario Modules and the Exercise Plan (EXPLAN), to finalize the Exercise Scenario and to define the roles of the participants of the Exercise.