58m
    Cornwall & Devon, United Kingdom
    The Manacles

    CIESZYN

    Best months: Jul–Sep

    Protected Area

    The Manacles

    Why dive here

    With 176+ marine species recorded in the area - including blue sharks, dolphins, dwarf minke whales, humpback whales and ocean sunfish (mola mola) - CIESZYN offers some of Cornwall & Devon's richest wreck diving. Water ranges 10-18°C, warmest July, August, September.

    Best timeJul–Sep
    WetsuitA 5mm wetsuit
    Marine lifeBlue Sharks, Dolphins, Dwarf Minke Whales, Humpback Whales and Ocean Sunfish (Mola Mola) · 176+ species recorded
    Water10-18°C · warmest July, August, September
    CharacterWreck dive · max 58m
    StandoutExceptional marine biodiversity

    The Cieszyn wreck, off the coast of Cornwall, is one of our favourite deep dives in the UK. She’s a decent size, 71 metres long, and lies intact on a sandy seabed at 58 metres, upright and proud. We particularly love the feeling of dropping onto her, knowing she was bombed by an aircraft in 1940. There’s a quiet solemnity to the dive, yet she’s absolutely buzzing with life. You’ll find walls thick with plumose anemones, their white tentacles reaching out like soft flowers in the current. Ling often hide in the darker recesses, and sometimes we spot conger eels poking their heads out from deeper within the structure. The stern section is particularly interesting, with the propeller still in place and a good area to explore for those comfortable with the depth and a bit of overhead penetration. This is a dive for experienced wreck enthusiasts, those who appreciate history and the challenge of a deeper, darker site. Be sure to time your dive for slack water; currents can be fierce, making the descent and ascent tricky otherwise.

    Typical CIESZYN Dive Profile

    15m30m45m60mSafety Stop0m58m max~15 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

    Maximum depth 58m exceeds recreational limits (40m). Technical diving certification and equipment required.

    Wreck site - avoid penetration without wreck diving certification. Watch for sharp metal and entanglement hazards.

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

    Today06:3617:3911h 3m daylightGolden hour 16:55

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    Conditions

    Ocean conditions, forecast and tides for CIESZYN

    CIESZYN Ocean Conditions

    Monthly averages for CIESZYN, sourced from Open-Meteo marine data - nearest station: Open-Meteo marine grid (50.44, -2.73) (3km away)

    ExcellentGreatGoodFairPoor★Best monthsThis month

    October Averages

    Sea Temperature

    17°C

    62°F · Range: 15.1–17.5°C

    Air Temperature

    13°C

    56°F

    Wind Speed

    8.14 m/s

    15.8 knots

    Atmospheric Pressure

    1011 hPa

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

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