U 678 (POSSIBLY)
Protected Area
Beachy Head West
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) - U 678 (POSSIBLY) offers some of Cornwall & Devon's richest wreck diving. Water ranges 10-18°C, warmest July, August, September.
Alright, let's talk about the U-678, or what we strongly suspect is the U-678, off the coast of Cornwall. This isn't a casual dip; at 60 metres, it's a deep wreck dive for experienced technical divers. Dropping down, you hit the bow first, then the immense hull stretches out, largely intact and sitting upright. What we love about this site is the sheer scale and the history you can almost feel. You'll see the conning tower still identifiable, even after all these years. Schools of pollack dart in and out of the torpedo tubes, and massive conger eels have claimed the inner compartments as their own. We'd suggest checking the tides carefully, as currents can pick up. On a good day, with decent visibility, exploring the deck guns and the remains of the anti-aircraft platform is absolutely our favourite part. It’s a somber, impressive dive, a real journey into the past, suitable for those who appreciate wrecks with a story and the skills to safely explore it.
Typical U 678 (POSSIBLY) 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 60m 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.
Always perform a 3-minute safety stop at 5m before surfacing.
Nearest Dive Centres to U 678 (POSSIBLY)
Dive shops near U 678 (POSSIBLY)
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Conditions
Ocean conditions, forecast and tides for U 678 (POSSIBLY)
U 678 (POSSIBLY) Ocean Conditions
Monthly averages for U 678 (POSSIBLY), 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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