Question 724Navigation General70% to pass
Your vessel is participating in the Voluntary Observing Ship Program. You are preparing WS Form B-80 as seen in illustration D041NG below. Three-quarters of the sky is covered with clouds, and the anemometer indicates that the apparent wind is from 226° relative at 17.7 knots. You are on course 020°T at 8 knots. How should you encode group Nddff?
AI Explanation
The correct answer is B) 62324.
To encode group Nddff, you need to determine the wind direction (dd) and wind speed (ff) based on the given information.
The apparent wind is from 226° relative, and you are on course 020°T at 8 knots. This means the true wind direction is 226° - 020° = 206°. Rounding this to the nearest 10 degrees gives a wind direction of 21 (206° rounded to 210°).
The anemometer indicates the apparent wind speed is 17.7 knots. Since you are moving at 8 knots, the true wind speed is 17.7 + 8 = 25.7 knots. Rounding this to the nearest 5 knots gives a wind speed of 25 knots.
Therefore, the correct encoding for group Nddff is 62324, where 62 indicates 6/8 cloud cover, 32 indicates a wind direction of 210°, and 24 indicates a wind speed of 25 knots.
The other options are incorrect because they do not accurately reflect the wind direction and speed based on the given information.
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