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USCG Exam PracticeSingle-screw maneuvering and prop walk

Under 46 CFR §184.620, a propulsion engine control system, including pilothouse control, must be designed so that a loss of power to the control system produces what result?

  1. A. An automatic increase in shaft speed to maintain steerageway
  2. B. An automatic shift to the secondary steering position
  3. No increase in shaft speed or propeller pitchCorrect
  4. D. An immediate shutdown of the propulsion engine

Why C is correct

46 CFR §184.620(c) requires that a propulsion engine control system be designed so that a loss of power to the control system does not result in an increase in shaft speed or propeller pitch. The regulation does not require automatic shutdown or automatic transfer to a secondary station upon loss of control power.

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Under 46 CFR §184.620, a propulsion engine control system, includin… — USCG Exam Practice · CaptainsGround