HMS Colossus was a 74 gun warship built in 1787 at Gravesend and wrecked in 1798. In 2009 a dive trail was installed with numbered dive stations positioned on the seabed around the wreck.
This website allows you to explore the remains of HMS Colossus, watch underwater videos, or orient yourself before diving on the wreck. A diagrammatic interactive 3D model has been designed to assist with divers and non-divers alike.
More information about the work on the wreck of Colossus, including previous surveys, is available on the CISMAS website. If you would like to see photographs or accounts of your visit on this web site please contact CISMAS.
Updates
- December 2025 – Dive Trail RefurbishmentIn 2025 the HMS Colossus dive trail was refurbished and updated. 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)
