YESSO
Protected Area
Hele, Samson's and Combe Martin Bays
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) - YESSO offers some of Cornwall & Devon's richest wreck diving. Water ranges 10-18°C, warmest July, August, September.
The Yesso, a steamship lost in 1894 after a collision, rests at 31 metres, making it a good target for divers with some experience in UK waters. At 88 metres long, she's substantial, her triple-expansion engine still visible amidst the collapsed hull sections. We often find large schools of bib and pollack hanging around the deeper parts of the wreck, and a patient eye will pick out conger eels tucked into the darker crevices. It’s a site that rewards multiple visits, giving you time to pick through the wreckage and appreciate the history.
Typical YESSO Dive Profile
Illustrative profile based on site depth and type. Actual dive profiles vary - always follow your dive computer and training.
Safety Notes
Deep dive (31m) - monitor air consumption closely. Advanced 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.
Nearest Dive Centres to YESSO
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Conditions
Ocean conditions, forecast and tides for YESSO
YESSO Ocean Conditions
Monthly averages for YESSO, 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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