17m
    Bornholm, Denmark
    Bøchers Grund

    CONMARK

    Best months: Jul–Sep

    Protected Area

    Bøchers Grund

    Why dive here

    With 66+ marine species recorded in the area - including jellyfish lake - CONMARK offers some of Bornholm's richest wreck diving. Water ranges 3-18°C, warmest July, August, September.

    Best timeJul–Sep
    WetsuitA 5mm wetsuit
    Marine lifeJellyfish Lake · 66+ species recorded
    Water3-18°C · warmest July, August, September
    CharacterWreck dive · max 17m

    The Conmark wreck off Bornholm is one of those sites we always recommend to divers who appreciate a good story with their dive. She’s a sturdy motor vessel, sitting upright at a shallow 17 metres, which makes for a long bottom time even on a single tank. The collision in 1970 with the Else Retzlaff left her surprisingly intact; you can still make out the superstructure and even parts of the deck machinery, all now draped in thick swathes of green and brown algae, waving gently in the mild current. What we love about the Conmark is how accessible the exploration is. You can easily swim through some of the larger openings, peeking into cargo holds where cod and pollock often shelter. The visibility here can vary, but on a good day, with the sun filtering down, the light plays beautifully off the encrusted metalwork. Keep an eye out for the resident crabs scuttling over the hull plates and the occasional flatfish camouflaged against the sandy seabed near the stern. We’d suggest diving this one mid-morning for the best light penetration. It’s a genuinely engaging wreck dive, ideal for those looking to spend time exploring the details rather than just passing by.

    Typical CONMARK Dive Profile

    10m20mSafety Stop0m17m max~50 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 14°C). Drysuit or thick wetsuit (7mm+) recommended.

    Always perform a 3-minute safety stop at 5m before surfacing.

    Today06:3117:2410h 53m daylightGolden hour 16:34

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    Conditions

    Ocean conditions, forecast and tides for CONMARK

    CONMARK Ocean Conditions

    Monthly averages for CONMARK, sourced from Open-Meteo marine data - nearest station: Open-Meteo marine grid (54.94, 13.85) (7km away)

    ExcellentGreatGoodFairPoor★Best monthsThis month

    October Averages

    Sea Temperature

    14°C

    57°F · Range: 11.7–16.3°C

    Air Temperature

    12°C

    53°F

    Wind Speed

    8.16 m/s

    15.9 knots

    Atmospheric Pressure

    1013.3 hPa

    Based on 4 years of monitoring data · Data sources: Open-Meteo marine data

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