12
Protected Area
North West of Lundy
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) - 12 offers some of Cornwall & Devon's richest wreck diving. Water sits around 10°C.
The 12, an unidentified wreck lying at 49m, is a deep dive for experienced cold-water wreck enthusiasts off the Cornish coast. We’ve found her to be well-preserved, with interesting structural features still intact, giving you plenty to explore. Visibility here can be variable, but when it’s good, the resident conger eels, lobsters, and jewel anemones really put on a show. This site suits divers comfortable with technical depths and the often-challenging conditions of the English Channel.
Typical 12 Dive Profile
Illustrative profile based on site depth and type. Actual dive profiles vary - always follow your dive computer and training.
Safety Notes
Maximum depth 49m exceeds recreational limits (40m). Technical diving certification and equipment required.
Wreck site - avoid penetration without wreck diving certification. Watch for sharp metal and entanglement hazards.
Cold water this month (avg 10°C). Drysuit or thick wetsuit (7mm+) recommended.
Always perform a 3-minute safety stop at 5m before surfacing.
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Conditions
Ocean conditions, forecast and tides for 12
12 Ocean Conditions
Monthly averages for 12, sourced from NOAA buoy data - nearest station: Open-Meteo grid (50.61, -4.86) (0km away)
August Averages
Sea Temperature
9.63°C
49°F
Air Temperature
17.09°C
63°F
Wind Speed
6.66 m/s
12.9 knots
Atmospheric Pressure
1015.6 hPa
Based on 5 years of monitoring data · Data sources: NOAA NDBC
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