1m
    Bornholm, Denmark
    Ulvsund, Grønsund og Farø Fjord

    KASTOR

    Best months: Jul–Sep

    Protected Area

    Ulvsund, Grønsund og Farø Fjord

    Why dive here

    With 66+ marine species recorded in the area - including jellyfish lake - KASTOR 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 1m

    Kastor is a peculiar one, and we love it for being so accessible. This isn't your deep, technical wreck dive; the old schooner lies in just a metre of water, a real shallow splash-and-go. It went down back in 1901, though the records sometimes say 1950, which is just a bit of local colour for you. We’ve found the best way to experience Kastor is to go slow, really pick apart the details of the hull that’s now so broken up. You’ll see the wooden ribs poking out of the sand, a ghostly skeleton that’s become home to a surprising amount of life. Little crabs skitter through the cracks, and tiny blennies dart between the barnacle-encrusted timbers. It’s not about big pelagics here; it's about the intricate ecosystem that thrives on decay. We’d suggest a calm, sunny day to really appreciate the light playing on the wreck, enhancing the amber hues of the wood against the pale sand. It's a fantastic spot for snorkelers or new divers looking to get a feel for a wreck without the pressure of depth. Just watch out for stray bits of wood, it’s an old girl and she’s coming apart.

    Typical KASTOR Dive Profile

    Safety Stop0m1m 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 14°C). Drysuit or thick wetsuit (7mm+) recommended.

    Today06:3317:2510h 52m daylightGolden hour 16:35

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    Conditions

    Ocean conditions, forecast and tides for KASTOR

    KASTOR Ocean Conditions

    Monthly averages for KASTOR, 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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