Your vessel is participating in the Voluntary Observing Ship Program, at 1800 ZT on 31 October your position is LAT 24°50'N, LONG 92°37'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?

Correct Answer: Option C — 01003, 99248, 70926

Voluntary Observing Ship (VOS) weather reporting codes follow WMO FM 13 SHIP format. Group 1 encodes date and time (31183), Group 2 encodes quadrant and latitude (99249), and Group 3 encodes longitude and octant (79237), matching standard marine observation rules.