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HMS Colossus Dive Trail

  • History
    More about HMS Colossus
  • HMS Colossus post-wrecking history
    Wreck timeline since 1799
  • Start the Dive Trail
    View the dive stations
  • Dive trail plan
    2D plan of wreck & Dive Trail with video
  • 3D multibeam sonar survey
    View the sonar survey in 3D
  • Dive videos
    Go on a guided dive tour of the wreck
  • Dive slate
    PDF download to print
  • Two unusual lead objects
    19th century diving on Colossus
  • Deadeye and chains
    Deadeye complete with iron chains
  • The empty gun port
    How the wreck changes through time
  • Any old iron?
    Identifying parts of an anchor
  • News & contributions
    Latest updates & dive photos
  • Add your own photos & videos
    Contribute via social media & email
  • Glossary
    Technical terms explained
  • About
    More about this project
  • CISMAS
    This project was undertaken by CISMAS – Cornwall and Isles of Scilly Maritime Archaeology Society

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Recent Posts

  • September 2025 – Dive Trail Refurbishment
  • November 2024: new articles and resources
  • Autumn 2019 Colossus Dive Trail Refurbishment
  • Deadeye and chains
  • HMS Colossus (1787-1798) Virtual Wreck Discovery Trail

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    September 2025 – Dive Trail Refurbishment

    In 2025 the HMS Colossus dive trail was refurbished and extended. The “Start the Dive Trail” page has been changed to include updated descriptions for each dive station, along with a PDF which can be downloaded for printing.

    View the full report of the Colossus 2025 Diver Trail Refurbishment (PDF, 7.9MB)

    Posted on September 30, 2025December 29, 2025Author adminCategories News

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