GRACE DIEU
Protected Area
Hackett's Marsh
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) - GRACE DIEU offers some of Cornwall & Devon's richest wreck diving. Water ranges 10-18°C, warmest July, August, September.
The *Grace Dieu* is something else, not your typical wreck dive. We're talking about a medieval ship, sunk in 1439 after a lightning strike. What’s left isn't a towering superstructure, but a scattering of ballast stones, timbers, and, with a bit of digging (and the right permits), artefacts that surface from the mud. It's an archaeological dive more than a penetration one. Visibility here can be a bit of a lottery, as it often is in the Solent, but on a good day, the low light filtering through the green water makes the site incredibly atmospheric. We’ve spent hours here, meticulously fanning away sediment to reveal sections of hull, feeling the ancient wood under our fingertips. It’s a slow dive, for divers who appreciate history and aren't chasing pelagics. You won't find schools of barracuda, but we've seen plenty of crabs scuttling over the stones, conger eels peeking from beneath buried timbers, and occasional flatfish settled on the silty bottom. Our advice? Go with a knowledgeable guide who can point out the subtle signs of history, and be prepared for a dive that engages your mind as much as your buoyancy control. This site is for those who love uncovering secrets, for the underwater historians among us.
Safety Notes
Wreck site - avoid penetration without wreck diving certification. Watch for sharp metal and entanglement hazards.
Nearest Dive Centres to GRACE DIEU
Dive shops near GRACE DIEU
Andark Diving
In2 Diving
Sunken Dreams Scuba Diving Academy
TAL Scuba Ltd.
Sussex Diving & Leisure
Mulberry Marine Experiences CIC
Reviews for GRACE DIEU
Conditions
Ocean conditions, forecast and tides for GRACE DIEU
GRACE DIEU Ocean Conditions
Monthly averages for GRACE DIEU, 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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