Mystery Atlas
Event

Operation Deepscan

The October 1987 sonar sweep of Loch Ness by a chain of some twenty boats, the largest such search ever mounted; it recorded three unexplained mid-water contacts and found no large animal.

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This is a knowledge-graph entry: what our data records about Operation Deepscan and how it connects to the rest of the atlas. It does not have a full article of its own yet.

Connected to

How this topic links to the people, places, and ideas around it — drawn from our knowledge graph.

Places

  • Loch Ness

    Operation Deepscan occurred in Loch Ness.

Creatures & Figures

  • Loch Ness Monstermodern legend from 1933

    Operation Deepscan is related to Loch Ness Monster — The 1987 sonar sweep found three unexplained mid-water contacts and no large animal.

Loch Ness: From Sighting Wave to eDNA

The modern legend's key beats — reusable across the Nessie, Loch Ness, lake-cryptid, and hoax pages.

  1. 565

    Adomnán's Life of St Columba

    The 7th-century hagiography describes a 'water beast' in the River Ness in 565 AD — a conventional saint's-life motif, retrofitted to the legend in the 1930s.

  2. 2 May 1933

    The Inverness Courier report

    Aldie Mackay's sighting, published just as the new lochside road opened, starts the modern sighting wave.

  3. 21 April 1934

    Surgeon's Photograph (1934)

    The Daily Mail publishes the 'surgeon's photograph'; it anchors the plesiosaur image for sixty years.

  4. 23 April 1960

    The Dinsdale film

    Tim Dinsdale films a moving wake; a 1966 RAF analysis calls it probably animate, later re-analyses favour a boat.

  5. 1972

    The Rines underwater photographs

    Robert Rines's strobe photographs, including the 'flipper' images, are later shown to have been heavily retouched.

  6. 9 October 1987

    Operation Deepscan

    The largest sonar sweep of the loch: three unexplained mid-water contacts, no monster.

  7. March 1994

    The surgeon's photograph exposed

    Christian Spurling's deathbed account, published by researchers Boyd and Martin, reveals the 1934 image as a staged model.

  8. 5 September 2019

    Loch Ness eDNA Survey

    The Otago team announces the loch's DNA catalogue: no reptiles, no unknown large animal, abundant eels.

Explored on these pages

Is the Loch Ness Monster Real?

Is the Loch Ness Monster real? What the sightings, the famous photograph, sonar sweeps, and the 2018 DNA survey of the loch actually found.