Question 1048Navigation 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. Twenty-five percent of the sky is covered with clouds, and the anemometer indicates that the apparent wind is from 062° relative at 13 knots. You are on course 238°T at 22 knots. How should you encode group Nddff?
AI Explanation
The correct answer is A) 20220.
The group Nddff encodes the cloud cover (N) and the wind direction and speed (ddff).
Based on the information provided:
- The sky is 25% covered with clouds, which corresponds to a cloud cover code of 2.
- The apparent wind is from 062° relative at 13 knots. Converting the relative wind direction to a true wind direction using the course of 238°T and the vessel speed of 22 knots gives a true wind direction of 062°.
- The wind speed of 13 knots corresponds to a wind speed code of 20.
Therefore, the correct encoding for Nddff is 20220.
The other options are incorrect because they do not accurately represent the cloud cover and wind conditions described in the problem.
Related Questions
#1046 You are underway on course 050°T and your maximum speed is 13 knots. The eye of a hurricane bears 100°T, 120 miles from your position. The hurricane is moving towards 275°T at 25 knots. What course should you steer at 13 knots to have the maximum CPA? #1047 Your vessel is participating in the Voluntary Observing Ship Program, at 1200 ZT on 31 July, your position is LAT 24°33'N, LONG 173°05'W. You are preparing WS Form B-80 as seen in illustration D041NG below. How should you encode the first three groups after the call sign if you estimate the wind? #1049 If the current and wind are in opposite directions, the sea surface represents _______________.#1050 If the current and wind are in the same direction, the sea surface represents a wind speed _______________.#1051 What should you expect when you encounter a tsunami in the open ocean?