A mystery object floating in the sea sparked the launch of the lifeboat in Sheringham at the weekend.
The local Coastwatch team raised the alarm after spotting 'a very large yellow object' half a mile off the beach at neighbouring Weybourne.
However, the crew was stood down when it emerged the object was a metal bouy, which appeared to be tied to the seabed or at anchor.
It is believed to be a mooring buoy used by vessels working or monitoring the wind farms in the area.
The drama unfolded on Saturday around 12.30pm.
A spokesperson for the lifeboat in Sheringham said: 'It was an interesting launch.'
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