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The evidence board

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The evidence board

What was reported, and what later checks showed

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Sources differ. The Loch Ness Project says twenty vessels took part in Operation Deepscan. BBC On This Day called it a flotilla of 24 boats. Both accounts agree that three sonar contacts were of interest, and the Project says those contacts remain unexplained.

The Loch Ness Project’s own account of Operation Deepscan, in 1987, says twenty vessels from Caley Cruisers of Inverness were equipped with Lowrance echo sounders and formed a slow-moving front line.⁠3 BBC On This Day, reporting the end of the 1987 search, called Deepscan “a flotilla of 24 boats” that picked up three sonar “contacts,” shown as crescent-shaped marks, in the waters below Urquhart Castle — possibly a seal or a group of salmon.⁠2

Sources differ. The Gazetteer dates the modern wave of sightings to 1932. BBC News and BBC On This Day place the well-known Mackay and Spicer reports in 1933. This site keeps both in view.

The Gazetteer says it was not until 1932 that a plethora of sightings began.⁠4

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