PSI
Protected Area
Gouliot Caves and Headland, Sark
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) - PSI offers some of Cornwall & Devon's richest wreck diving. Water ranges 10-18°C, warmest July, August, September.
The PSI, a fishing vessel that went down in 1996, sits upright at 30 metres. It’s a compact wreck, just 7.7 metres long, making it a good site for an extended bottom time or for combining with another nearby dive if conditions allow. We’ve found plenty of plumose anemones clinging to the stern and often spot wrasse darting in and out of the wheelhouse. The wreck itself is starting to break down, but the bow and stern sections still offer a fair bit to explore. It’s a solid dive for those looking to experience a relatively intact, though small, piece of Cornwall’s maritime history.
Typical PSI 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 30m - 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 PSI
Conditions
Ocean conditions, forecast and tides for PSI
PSI Ocean Conditions
Monthly averages for PSI, 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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