The Offshore Voyaging Reference Site

Navigation in Fog, Part 3—Underway

After preparing ourselves and our boat, we’re underway at last. The forecast warned of fog banks, but so far the visibility is clear and we’re enjoying the views. But we know it can’t last and we’re watching for any signs that might forewarn us that fog is on its way, such as:

  • Visible banks on the horizon.
  • Condensation forming on metal objects on deck.
  • Breath condensing.
  • Atmospheric phenomena caused by temperature inversion such as the ‘Fata Morgana’ where distant objects appear distorted, sometimes appearing in the sky upside down.


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