GRETHE
Protected Area
Sydfynske Øhav
Why dive here
With 95+ marine species recorded in the area - including seals & sea lions, sea turtles and jellyfish lake - GRETHE offers some of North Sea Coast's richest wreck diving. Water ranges 3-19°C, warmest July, August, September.
The Grethe, a motor vessel lost in 1960, sits upright and largely intact on the seabed at a comfortable 15 meters. We love this wreck for its penetrable engine room, a real highlight, offering a glimpse into its past life. The wheelhouse is also still there, adding to the sense of discovery. You’ll find a surprising amount of soft coral growing on the hull, a colourful contrast to the ship’s dark steel. Visibility here can be a bit of a lottery, as it often is in the North Sea. We’ve had days where it’s a murky 5 meters, and others where it opens up to 15, letting sunlight stream through the superstructure. Our best dives have been on calm days after a period of settled weather. The resident cod are often curious, swimming close, and we’ve spotted plenty of crabs tucked into crevices. This wreck is perfect for those who enjoy a solid, explorable wreck without the pressures of extreme depth or current. It’s a proper dive, a rewarding one, especially if you catch it on a good day.
Typical GRETHE Dive Profile
Illustrative profile based on site depth and type. Actual dive profiles vary - always follow your dive computer and training.
Safety Notes
Wreck site - avoid penetration without wreck diving certification. Watch for sharp metal and entanglement hazards.
Cold water this month (avg 13°C). Drysuit or thick wetsuit (7mm+) recommended.
Always perform a 3-minute safety stop at 5m before surfacing.
Nearest Dive Centres to GRETHE
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Conditions
Ocean conditions, forecast and tides for GRETHE
GRETHE Ocean Conditions
Monthly averages for GRETHE, sourced from Open-Meteo marine data - nearest station: Open-Meteo marine grid (55.31, 9.86) (1km away)
October Averages
Sea Temperature
13°C
56°F · Range: 10.7–16.8°C
Air Temperature
11°C
52°F
Wind Speed
7.69 m/s
14.9 knots
Atmospheric Pressure
1010.5 hPa
Based on 4 years of monitoring data · Data sources: Open-Meteo marine data
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