Your vessel is participating in the Voluntary Observing Ship Program, you are preparing WS Form B-80 as seen in illustration D041NG below. The sky is overcast, and the anemometer indicates that the apparent wind is from 144° relative at 8 knots. You are on course 162°T at 15 knots. How should you encode group Nddff?

Question

Your vessel is participating in the Voluntary Observing Ship Program, you are preparing WS Form B-80 as seen in illustration D041NG below. The sky is overcast, and the anemometer indicates that the apparent wind is from 144&deg; relative at 8 knots. You are on course 162&deg;T at 15 knots. How should you encode group Nddff?

Accepted Answer

Option C: 83322. VOS program weather coding uses group Nddff where N is cloud cover, dd is true wind direction in tens of degrees, and ff is wind speed. Apparent winds are converted to true meteorological values, yielding group 83322 per WMO and NWS standards.