Vehicle Inspection & Maintenance Flashcards
7 cards from real OBS practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Vehicle Inspection & Maintenance flashcards as text
When inspecting your boat's bilge pump, how should you verify it is functioning correctly before departure?
Answer: Pour water into the bilge and activate the pump manually to confirm it evacuates water
Testing the bilge pump by introducing water and operating it manually confirms the pump, hose, and discharge are all working before you leave the dock.
Which of the following is the correct procedure for checking engine oil on an inboard gasoline engine before a trip?
Answer: Check the dipstick with the engine off on a level surface and wipe it before the final reading
Oil must be checked with the engine off on a level surface; wiping the dipstick before reinserting ensures an accurate reading.
What does a corroded battery terminal most directly risk on a boat?
Answer: Increased electrical resistance causing poor starting or total electrical failure
Corrosion adds resistance to the circuit, reducing current flow and making it difficult or impossible to start the engine or power navigation lights.
During a pre-departure hull inspection, you notice a soft or spongy area on a fiberglass deck. What does this most likely indicate?
Answer: Water intrusion and delamination of the core material beneath the deck skin
Soft spots in fiberglass decks typically indicate water has entered and saturated or rotted the foam or wood core, causing delamination.
How often should you inspect your boat's steering cable or hydraulic steering system for proper operation?
Answer: At the start of every boating season and periodically throughout the season
Steering systems should be inspected at the beginning of each season and checked periodically because a failure at speed can be catastrophic.
What is the primary purpose of a zincs (sacrificial anode) attached to a boat's outdrive or propeller shaft?
Answer: To prevent galvanic corrosion from destroying metal underwater components
Sacrificial anodes made of zinc (or aluminum or magnesium) corrode preferentially, protecting more valuable metal components from galvanic corrosion in water.
When inspecting your vessel's fire extinguisher before departure, what three things must you verify?
Answer: Proper classification, charge level, and absence of damage or corrosion
A serviceable marine fire extinguisher must be the correct type for the hazard, fully charged (gauge in green), and free of physical damage or corrosion that could impair use.