Wind And Watchbox Layers; Wind Arrows; Wind Barbs - Raymarine LIGHTHOUSE 3 Advanced Operation Instructions

10.10 Wind and Watchbox layers

The Wind layer uses Arrows or Barbs to identify wind direction and speed. The Watchbox layer
identifies areas where severe weather is occurring or forecast within a specified range.

Wind arrows

The direction of the arrow indicates wind direction and the size of the arrow indicates wind speed,
the larger the arrow the greater the wind speed. Where conditions are calm a circular symbol is used.
You can switch between using Arrows or Barbs for Wind data from the Weather tab of the Chart
menu: Menu > Settings > Weather > Wind symbol.

Wind barbs

Wind barbs identify wind direction and speed.
Barbs provide a more accurate speed resolution than arrows.
Adding the half barbs, full barbs and flags together provides wind speed. The direction the barbs
point towards indicates where the wind is coming from.
• Half barbs = 5 knots
• Full barbs = 10 knots
• Flag = 50 knots
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