10m
    North Sea Coast, Denmark
    Maden on Helnæs and the sea west of

    ASTRAEA

    Best months: Jul–Aug

    Protected Area

    Maden on Helnæs and the sea west of

    Why dive here

    With 95+ marine species recorded in the area - including seals & sea lions, sea turtles and jellyfish lake - ASTRAEA offers some of North Sea Coast's richest wreck diving. Water ranges 3-19°C, warmest July, August, September.

    Best timeJul–Aug
    WetsuitA 5mm wetsuit
    Marine lifeSeals & Sea Lions, Sea Turtles and Jellyfish Lake · 95+ species recorded
    Water3-19°C · warmest July, August, September
    CharacterWreck dive · max 10m

    The Astraea is a wreck we always recommend for divers looking to explore a bit of history without the usual North Sea chill. She's shallow, sitting at just ten metres, which makes for long bottom times and great natural light penetration. We love the way the light filters down through the water, illuminating the various nooks and crannies where the local fish like to hide. What makes the Astraea special for us is the story she tells. You're not just looking at a pile of metal; you're seeing the remains of a vessel that met a dramatic end, now completely colonised by the sea. Expect to spend your dive navigating around sections of the hull, spotting flatfish camouflaged against the sand, and exploring the holds where schools of small cod often congregate. The wreck has become an artificial reef, attracting crabs, starfish, and a surprising number of sea slugs. It’s an ideal spot for macro photographers or anyone who appreciates a more intimate wreck dive. We'd suggest aiming for a calm day; visibility can be a bit variable, but on a good day, it's surprisingly clear for the North Sea. Keep an eye on the current too; it’s usually gentle here, but it can pick up.

    Typical ASTRAEA Dive Profile

    5m10mSafety Stop0m10m max~60 min estimated bottom time

    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.

    Today06:4117:3210h 52m daylightGolden hour 16:43

    ASTRAEA Wreck History

    Vessel Type

    unknown

    Cause

    unknown

    The identity and history of the wreck known as Astraea, located off Denmark's North Sea coast, remain a mystery. Resting in just 10 meters of water, it is highly accessible to divers, but its shallow depth also exposes it to the full force of the often-turbulent North Sea. This constant wave action has likely broken the vessel apart over the years. The official classification as a 'Dangerous Wreck' is a stark reminder for divers to be cautious of strong currents, shifting wreckage, and potential entanglement hazards. For local divers and maritime historians, the Astraea presents a puzzle-a scattered collection of remains on the seabed waiting to tell its forgotten story.

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    Conditions

    Ocean conditions, forecast and tides for ASTRAEA

    ASTRAEA Ocean Conditions

    Monthly averages for ASTRAEA, sourced from Open-Meteo marine data - nearest station: Open-Meteo marine grid (55.31, 9.86) (1km away)

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    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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