VIP Exclusive
MST Marine Service Technician VIP Certification Exam
MST — The Marine Service Technician (MST) credential is administered by the American Boat and Yacht Council (ABYC) and covers marine electrical, engine, fuel, propulsion, plumbing, and safety systems; the real exam consists of approximately 100 questions with a 75% passing threshold and is grounded in ABYC, USCG, EPA, and NFPA standards.
54
Questions
90m
Time Limit
75.00%
To Pass
Question 1 of 54👑 VIP
A customer brings in a 28-foot inboard cruiser complaining that the bilge blower runs but the engine cranks slowly and then dies immediately after starting. The battery voltage reads 12.4V at rest. You load-test the battery and it drops to 9.1V under load. Which of the following is the MOST likely root cause and correct next step?
Questions 2–54 and full explanations are VIP-exclusive.