Merchant Mariner Credential
Free Merchant Mariner Credential (MMC) practice test with instant feedback and detailed answer explanations. Prepare for your certification exam.
About the Author
Captain David HarringtonBS Marine Transportation, Master Mariner License, STCW
Master Mariner & Maritime Certification Specialist
Massachusetts Maritime AcademyCaptain David Harrington is a US Coast Guard licensed Master Mariner with a Bachelor of Science in Marine Transportation from Massachusetts Maritime Academy. He has 22 years of deep-sea and coastal navigation experience aboard commercial vessels and specializes in preparing maritime candidates for USCG licensing exams, STCW certification, dynamic positioning (DPO), and officer-of-the-watch qualifications.