Practice Test Geeks(MTC) Marine Technician Certification Practice Test
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Marine Plumbing & Sanitation Systems Flashcards

7 cards from real MTC 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 Plumbing & Sanitation Systems flashcards as text

  1. What type of valve must be installed on all thru-hull fittings located below the vessel's waterline?

    Answer: Seacock (tapered plug or ball valve)

    ABYC standards require a seacock at all below-waterline thru-hull fittings to allow immediate emergency shutoff and prevent flooding.

  2. Which U.S. federal regulation classifies Marine Sanitation Devices (MSDs) into Types I, II, and III?

    Answer: Title 33 CFR Part 159

    33 CFR Part 159 is the EPA/USCG regulation establishing federal standards for Marine Sanitation Devices and their classification system.

  3. A Type III Marine Sanitation Device (MSD) is best described as which of the following?

    Answer: A holding tank that retains all sewage for pump-out ashore

    A Type III MSD is a holding tank that stores all sewage onboard without any discharge, requiring pump-out at an approved shore facility.

  4. What is the purpose of a Y-valve in a marine sanitation system?

    Answer: To divert waste flow between the holding tank and overboard discharge

    A Y-valve allows the operator to direct waste flow either to the holding tank or, where legally permitted, to overboard discharge.

  5. Which fitting material is NOT acceptable for use in a vessel's potable (drinking) water system?

    Answer: Lead-containing bronze fittings

    Lead-containing fittings are prohibited in potable water systems because lead can leach into drinking water, creating a serious health hazard.

  6. Per ABYC standards, how many hose clamps are recommended at each below-waterline hose connection?

    Answer: Two stainless steel clamps per connection

    ABYC standards recommend two stainless steel hose clamps at every below-waterline connection to provide redundancy if one clamp fails.

  7. What does 'raw water' refer to in the context of a marine engine cooling system?

    Answer: Untreated seawater or lake water drawn directly from outside the hull

    Raw water is untreated water drawn directly from the body of water the vessel floats in, used to cool the engine, wet exhaust, or other components.