What is the main reason why a DP equipment class 2 vessel requires at least 3 gyro's?
RefNo: 2019-214a
A To allow the DP system to reject the faulty gyro.
B Buy 2 get the third one free.
C The third one is to feed the survey spread.
D One gyro is used for each of the three required position reference systems.

Question

Accepted Answer

The main reason why a DP (Dynamic Positioning) equipment class 2 vessel requires at least 3 gyros is:

A) To allow the DP system to reject the faulty gyro.

This option is the most accurate because DP class 2 systems are designed with redundancy in mind. This means that the system can continue to function correctly even if one component fails. Having at least three gyros allows the DP system to compare the outputs from all gyros. If one gyro gives a reading that significantly deviates from the others, the system can identify it as faulty and disregard its data, relying on the remaining gyros for accurate heading information. This capability is crucial for maintaining the vessel's position and heading with high reliability, which is a fundamental requirement in operations where DP class 2 vessels are typically employed, such as offshore drilling or complex marine operations near sensitive structures.

What is the main reason why a DP equipment class 2 vessel re...

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