LST 523
Why dive here
With 176+ marine species recorded in the area - including blue sharks, dolphins, dwarf minke whales, humpback whales and ocean sunfish (mola mola) - LST 523 offers some of Cornwall & Devon's richest wreck diving. Water ranges 10-18°C, warmest July, August, September.
The LST 523, a Landing Ship Tank, holds a somber story, sunk by a mine just days after D-Day. We love a wreck with history you can almost feel, and this one delivers. Lying in 21 metres, she’s well within recreational limits, perfect for divers wanting to explore a substantial piece of wartime history without deep-diving complications. Dropping down onto the LST, the sheer scale of the vessel quickly becomes apparent. The bow section is particularly impressive, rising from the seabed, still showing the damage that sent her down. Inside, the cavernous tank deck is now home to an impressive collection of marine life. We’ve found conger eels the size of small tree trunks lurking in the darker corners, and the hull is absolutely plastered with jewel anemones and dead man’s fingers, creating a vibrant, colourful tapestry over the rusted metal. Schools of bib and pollack swirl around the structure, darting in and out of the openings where tanks would have once rolled. It's an atmospheric dive, giving you a real sense of the past while also showcasing the resilience of nature. For the best light on the internal spaces, we’d suggest a mid-morning dive when the sun is higher.
Typical LST 523 Dive Profile
Illustrative profile based on site depth and type. Actual dive profiles vary - always follow your dive computer and training.
Safety Notes
Depth of 21m - Advanced Open Water certification recommended.
Wreck site - avoid penetration without wreck diving certification. Watch for sharp metal and entanglement hazards.
Always perform a 3-minute safety stop at 5m before surfacing.
Reviews for LST 523
Conditions
Ocean conditions, forecast and tides for LST 523
LST 523 Ocean Conditions
Monthly averages for LST 523, sourced from Open-Meteo marine data - nearest station: Open-Meteo marine grid (50.44, -2.73) (3km away)
October Averages
Sea Temperature
17°C
62°F · Range: 15.1–17.5°C
Air Temperature
13°C
56°F
Wind Speed
8.14 m/s
15.8 knots
Atmospheric Pressure
1011 hPa
Based on 4 years of monitoring data · Data sources: Open-Meteo marine data
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