8m
    North Sea Coast, Denmark
    Maden on Helnæs and the sea west of

    NF 399

    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 - NF 399 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 8m

    NF 399 isn't about vibrant corals or big pelagics. It’s about history, cold water, and the unique, rugged beauty of a North Sea wreck. This Danish fishing vessel sits upright in just 8 meters of water, making it surprisingly accessible, though the North Sea can be a bit moody with visibility. We’ve found the best conditions often come after a few days of settled weather. Dropping onto the wreck, you're immediately struck by the sheer scale of it, considering the depth. The bow faces west, and the stern is still largely intact, a testament to the build quality. We love exploring the wheelhouse area, which is partially collapsed but still offers some interesting swim-throughs if you’re comfortable in confined spaces and have the right training. Expect to see cod lurking in the shadows, their dark scales almost blending with the rusting steel, and a surprising number of crabs scuttling amongst the plates. This isn't a dive for photography unless you enjoy moody, low-light shots, but it's our favourite for feeling that direct connection to the sea's past. Perfect for wreck enthusiasts who appreciate the stark beauty of a cold-water site and don't mind a bit of a current.

    Typical NF 399 Dive Profile

    5m10mSafety Stop0m8m 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.

    Today06:4217:3310h 51m daylightGolden hour 16:43

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    Conditions

    Ocean conditions, forecast and tides for NF 399

    NF 399 Ocean Conditions

    Monthly averages for NF 399, 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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