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I am required to develop 20 advanced-level multiple-choice questions derived from the provided material concerning DP systems, laser units, wind sensors, reference origins, and related topics. I shall begin by carefully analyzing the content to discern its key points and potential areas for inquiry.

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Firstly, the operational guidelines for the laser unit specify tasks such as cleaning the lenses and prism stacks, ensuring the correct height of reflector placement, avoiding pathways, and maintaining adequate distance from the laser. The benefits encompass affordability, simplicity of installation, the use of passive targets, among others. Drawbacks pertain to environmental factors such as sunlight, condensation, fog, interference caused by reflective objects, and prior challenges with UDU readability.

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The section on environmental references examines wind sensors, addressing their role in feed-forward processes, the calculation of weathervane heading, the impact of vessel draught, feed-forward compensation mechanisms, optimal sensor placement to prevent wind shadow, challenges associated with sensor deselection, and the influence of helicopter operations on sensor readings. The reference origin describes the mechanism through which the initially chosen PRS is designated as the origin, as well as the procedure for altering it by deselecting all selections. The reference section under the heading addresses gyros, redundancy, and the responsibility of the DPO in determining the appropriate selection when discrepancies arise.

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It is essential to ensure that the questions are sufficiently challenging, potentially by integrating multiple details or necessitating comprehension of interactions between systems. Let us commence with inquiries pertaining to lasers. For instance, what is the rationale for positioning site reflectors at a greater distance? Due to its design aimed at achieving higher returns. What environmental conditions hinder the performance of laser systems? Sunlight, mist, snowfall, and other atmospheric conditions

The Role of Wind Sensors: Objectives of the Feed-Forward Function, Implications of Sensor Deactivation, and the Impact of Draught on Weathervane Calculations The reference origin may inquire about modifying the origin by deselecting all PRS. Issues of gyro redundancy arising from discrepancies between two gyros.

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Allow me to begin formulating questions:

1. What is a recommended practice when siting laser reflectors?
   • A. Place them as close as possible to the laser
   • B. Site them at the same height as the laser
   • Correct: The exam with the answers is available for purchase!
2. Which condition does NOT impair laser system operation?
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3. What happens if wind sensors are deselected?
   • The DP system uses the model’s constant wind value, losing feed-forward. Correct answer The exam with the answers is available for purchase!
4. What factor influences the weathervane heading calculation besides wind and current?
   • The exam with the answers is available for purchase!
5. How is the Reference Origin determined?
   • First selected position reference system. So options would include that.
6. To change the Reference Origin, what must the DPO do?
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7. Why is the feed-forward function important in wind compensation?
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8. Which is a disadvantage of the laser system?
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9. What occurs if a moved reflector is detected by Cyscan?
   • The system can give a warning. Correct answer mentions tracking multiple and movement alerts.
10. Where should wind sensors be placed?
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11. What’s a problem with having two gyros and a discrepancy?
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12. If a laser is at the mast top, what’s a concern?
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13. What’s a benefit of passive targets in laser systems?
    • No power needed, intrinsic safety. Correct.
14. When might a DPO deselect wind sensors?
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15. What’s the impact of heavy rain on a laser system?
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16. How does vessel draught affect weathervane heading?
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17. Which is true about the Reference Origin?
    • It’s determined by the first PRS, not the most reliable. Correct.
18. Why are prisms mentioned in the operational notes?
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19. What is a critical function of the wind feed-forward?
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20. What’s a drawback of earlier laser UDU models?
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Verify accuracy and ensure that the distractors are plausible. Additionally, ensure that all sections—laser, wind, reference, and gyro—are thoroughly addressed. Prevent redundancy. Ensure that each question addresses a separate and specific key concept.

DPT Offshore Marine

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