Your vessel is participating in the Voluntary Observing Ship Program, you are preparing WS Form B-80 as seen in illustration D041NG below. You are hove to in a hurricane on a heading of 328°T. The wind is from 030° true at 119 knots. How should this be encoded on the weather report form?

Question

Accepted Answer

Option B: 80399. Hurricane wind speeds exceeding 99 knots use indicator '99' in the wind group. Wind direction is encoded in tens of degrees true (030° becomes 03), resulting in group 80399 per WMO FM 13 SHIP reporting guidelines for extreme tropical cyclone environments.