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- Master & Chief Mate (Oceans or Near Coastal (Offshore Supply Vessel)) »
- Q203 - Navigation General: Near Coastal
300. You will be transiting a traffic lane with a wreck having a charted depth of 40 feet. The Zone of Confidence (ZOC) for that area of the chart is ZOC B. Which of the following statements is true
ZOC B indicates a depth uncertainty of approximately +-4 feet, resulting in a likely depth range of 36 to 44 feet, and a horizontal position uncertainty of about 164 feet from the charted location.
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