MTC Cheat Sheet 2026

The 30 highest-yield MTC facts, distilled from real exam questions. Print it, save it as a PDF, or study it here — free, no sign-up.

1. A marine technician notices soft spots in a fiberglass deck. What is the MOST likely cause? → Water-saturated core material (balsa or foam)
2. In MTC practice, what is a needs assessment? → A systematic process to identify gaps between current conditions and desired outcomes
3. A boat experiences constant pulling to one side at cruise speed with no steering input. What is the MOST likely cause? → Propeller torque effect or a bent/damaged propeller blade
4. What is the primary purpose of a sacrificial anode on a marine vessel? → To prevent galvanic corrosion on metal components
5. In MTC practice, what is a needs assessment? → A systematic process to identify gaps between current conditions and desired outcomes
6. What type of caulking compound is best suited for sealing teak deck seams on a marine vessel? → Polysulfide sealant
7. What does professional liability insurance protect a MTC practitioner against? → Financial loss from claims of negligence, errors, or omissions in professional services
8. In MTC practice, what is the purpose of regulatory compliance? → To ensure adherence to laws, regulations, and standards that govern professional practice
9. What type of pump is most commonly used in pressurized marine freshwater systems? → Diaphragm pump that is self-priming and pressure-sensitive
10. What is the consequence of non-compliance in MTC professional practice? → Potential fines, license revocation, legal liability, and reputational damage
11. In MTC practice, what is the purpose of a standard operating procedure (SOP)? → To document step-by-step instructions for routine tasks to ensure consistency and quality
12. What does professional liability insurance protect a MTC practitioner against? → Financial loss from claims of negligence, errors, or omissions in professional services
13. In MTC practice, what is the purpose of a standard operating procedure (SOP)? → To document step-by-step instructions for routine tasks to ensure consistency and quality
14. What problem can arise from a faulty marine thermostat? → Engine overheating or underheating
15. Which component protects the electrical system from overload? → Circuit breaker
16. How must oil-contaminated bilge water be legally disposed of under U.S. environmental regulations? → Collect and dispose of at an approved marine waste collection or pump-out facility
17. What is the purpose of a transom drain plug in a trailered boat? → To drain bilge water while the boat is on the trailer
18. What is the primary function of the marine engine cooling system? → Prevent engine overheating
19. What is the most common cause of excessive play (looseness) in a mechanical boat steering system? → Worn or stretched steering cable or loose helm connections
20. What is the function of a cutlass bearing in a marine propulsion system? → To support the propeller shaft and allow it to rotate smoothly
21. When inspecting a propeller shaft for runout, what tool does a marine technician use? → Dial indicator (dial gauge)
22. A technician notices vibration at cruise speed that disappears when the throttle is reduced. What propulsion component should be inspected FIRST? → Propeller for damage, cupping, or pitch variation
23. In MTC practice, what is a corrective action plan? → A documented strategy to address identified compliance deficiencies and prevent recurrence
24. Per ABYC standards, how many hose clamps are recommended at each below-waterline hose connection? → Two stainless steel clamps per connection
25. What is the purpose of the fuel filter in a marine engine? → Remove contaminants from fuel
26. What is the purpose of a Y-valve in a marine sanitation system? → To divert waste flow between the holding tank and overboard discharge
27. What is the purpose of 'osmotic barrier coating' applied to a fiberglass hull below the waterline? → To prevent water penetration that causes blistering
28. Which fitting material is NOT acceptable for use in a vessel's potable (drinking) water system? → Lead-containing bronze fittings
29. When bleeding a hydraulic steering system on a marine vessel, what is the correct procedure? → Attach a vacuum pump to the fill port while turning the wheel lock-to-lock
30. Which part of the engine synchronizes the rotation of the crankshaft and camshaft? → Timing belt/chain