Bearing estimation

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Estimating bearing is a key skill for Marine Mammal Observers, and can be used along with range to calculate the location of a marine mammal in relation to the vessel.

Angle boards

The easiest way to estimate bearing to a sighting is to use an angle board. An example  is shown below, and a copy is available for download here. AngleBoard_GR

Bearing estimation

  • Line up the angle board with the heading of the vessel or platform; and
  • Align a pointer or pencil with the position of the animal, and read of the bearing.
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