GRAND COPAISE
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) - GRAND COPAISE offers some of Cornwall & Devon's richest wreck diving. Water ranges 10-18°C, warmest July, August, September.
The Grand Copaise is one of those wrecks that really sticks with you, a bit of a local favourite for us. She went down in '84, a French trawler, and has settled nicely on the seabed at 45 metres. What we love about her is how intact she remains; you can still make out the wheelhouse, the mast, and even the trawl winches. Dropping down, the gloom of the deep water gives way to the superstructure, often draped in fishing nets, a somber reminder of her working life. Explore the deck, and you'll find plenty of nooks and crannies where conger eels have set up shop, their heads poking out from pipes and crevices. We've seen some impressively large ones here. The deeper sections around the stern are particularly atmospheric, with schools of pouting often schooling so densely around the wreck you can barely see past them. It's a dive that demands experience and a good handle on your trim, but for those capable, it offers a genuinely rewarding glimpse into a working vessel lost to the Channel. Dive this one on a slack tide, otherwise, you'll be flying past a lot of good stuff.
Typical GRAND COPAISE 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 45m 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.
Reviews for GRAND COPAISE
Conditions
Ocean conditions, forecast and tides for GRAND COPAISE
GRAND COPAISE Ocean Conditions
Monthly averages for GRAND COPAISE, 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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