Garmin GDL 30A Owner's Manual - Page 20

Wave Period, Wave Direction, The Wave Direction feature shows the direction in which waves are moving

Page 20 highlights

XM WX Weather Features Wave Period The Wave Period feature provides the time (in seconds) between successive waves. Wave Direction The Wave Direction feature shows the direction in which waves are moving, as indicated by the direction of the red arrows. Wave Period Feature Wave Direction Feature 18 GDL 30A Owner's Manual

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GDL 30A Owner’s Manual
Wave Period
The Wave Period feature provides the time (in seconds) between successive waves.
Wave Direction
The Wave Direction feature shows the direction in which waves are moving, as indicated by the direction of the red arrows.
Wave Period Feature
Wave Direction Feature
XM WX Weather Features