Practice Test Geeks(ASA) American Sailing Association Certifications Practice Test
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Marine Systems & Equipment Flashcards

7 cards from real ASA practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

Read the first 7 Marine Systems & Equipment flashcards as text

  1. What is the purpose of sacrificial zinc anodes on a sailboat?

    Answer: Protect underwater metal components from galvanic corrosion by corroding preferentially

    Zinc anodes are less noble metals that corrode first, protecting more valuable underwater fittings like the propeller and shaft from galvanic corrosion.

  2. How often should seacocks be exercised (opened and closed) to prevent seizing?

    Answer: At least monthly to prevent them from seizing

    Seacocks should be operated monthly to prevent corrosion from causing them to seize in the open position, which would make them unusable in an emergency.

  3. What is the primary function of a marine battery switch (also called a battery selector switch)?

    Answer: Isolate or combine battery banks and disconnect batteries from the electrical system

    A battery switch allows crew to select which battery bank powers the boat, combine banks for starting, or isolate all batteries for safety.

  4. When inspecting standing rigging, what are the most critical signs of failure risk?

    Answer: Broken strands (fishhooks), cracked swage fittings, and signs of corrosion

    Broken wire strands, cracked swages, and rust are warning signs of imminent rigging failure and must be addressed immediately.

  5. What is the correct first action when a through-hull fitting begins to leak while underway?

    Answer: Close the seacock to stop flooding, then assess the situation

    Closing the seacock immediately stops water ingress and gives you time to assess the damage and make a temporary repair.

  6. What type of fire extinguisher is recommended for a marine engine compartment?

    Answer: CO2 (carbon dioxide) extinguisher rated for Class B and C fires

    CO2 extinguishers are effective on Class B (flammable liquid) and Class C (electrical) fires typical in engine compartments without leaving harmful residue.

  7. What does the impeller in a marine engine's raw water pump do?

    Answer: Circulates raw water through the engine cooling circuit via flexible rubber vanes

    The raw water pump impeller uses flexible rubber vanes to draw seawater in through the intake and push it through the engine cooling circuit.