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Two Divers Never Came Back Up | HMS Scylla Tragedy

Jan 25, 2026
On September 3rd, 2021, a routine dive on the HMS Scylla artificial reef turned into one of the UK's most tragic diving incidents. Three experienced divers entered the complex engine room of the wreck. Only one made it back to the surface. In this exclusive interview, sole survivor Adam Dent breaks his silence on the events that claimed the lives of Andrew Harman and Mark Gallant. He details the silt-out, the disorientation, and the critical life-or-death decisions he made in the pitch black of the wreck's interior. This is not just a story of a diving accident; it is a vital lesson in survival, risk management, and the unforgiving nature of overhead environments. ━━━━━━━━━━━━━━━━━━━━━━ *Thanks* Thank you to Bryan Boldt for the Insta360 footage used in this dive ━━━━━━━━━━━━━━━━━━━━━━ *Contents* 00:00 Introduction 03:36 HMS Scylla 05:42 Separation 08:07 The trapdoor 12:24 Fighting my body 14:17 Running out of gas 17:07 The escape

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