40m
    Cornwall & Devon, United Kingdom
    Offshore Overfalls

    ATLAS (PROBABLY)

    Best months: Jul–Sep

    Protected Area

    Offshore Overfalls

    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) - ATLAS (PROBABLY) 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 40m
    StandoutExceptional marine biodiversity

    The Atlas, or what we’re pretty sure is the Atlas, sits upright at 40 metres, a proper deep dive that’ll test your gas planning. We love a good mystery, and the identity of this wreck has kept local divers guessing for years, adding a cool layer of intrigue to an already impressive site. She’s a decent sized steamship, 66 metres long, and while the superstructure is largely gone, her bones are still very much there, laid out on the seabed. You’ll drop down onto the bow, often seeing some impressive conger eels poking out from the plates. Moving aft, the single boiler is a real focal point, and the triple expansion engine stands proud, a ghostly monument to a bygone era of steam. The visibility can be hit or miss, typical of the Channel, but when it’s good, you can make out the scale of the wreck from above, schools of pouting swarming the deck like a living cloud. Our advice? Hit this on a slack tide, obviously, but also look for a day with minimal surface chop – that’ll make the whole descent and ascent a lot more comfortable. It’s a dive for those comfortable with depth and who appreciate a proper historical wreck, not just the critters, though the critters are certainly here.

    Typical ATLAS (PROBABLY) Dive Profile

    15m30m45mSafety Stop0m40m max~20 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

    Deep dive (40m) - monitor air consumption closely. Advanced certification recommended.

    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.

    Today06:1817:2111h 2m daylightGolden hour 16:36

    ATLAS (PROBABLY) Wreck History

    Year Sunk

    1917

    Vessel Type

    cargo ship

    Cause

    torpedo

    Tonnage

    1,173 GRT

    Built in Frederikstad, Norway, in 1896, the steamship Atlas was a Norwegian vessel pressed into service for the Allied cause during World War I. By 1917, she was operating under the control of the British Shipping Controller, a wartime measure to manage merchant shipping. On November 13, 1917, while navigating the English Channel off the coast of Cornwall, she crossed paths with the German U-boat UC-51. The resulting torpedo attack was swift and fatal.

    Today, the wreck of the Atlas rests at 40 metres, making it an excellent deep air or entry-level trimix dive. Located in an area rich with maritime history, the wreck is a popular site for local divers. Its modest size allows for a comprehensive tour on a single dive, where explorers can identify key features like its single boiler and triple-expansion engine. The Atlas offers a compelling and accessible window into the relentless U-boat campaign that defined the war at sea.

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    Conditions

    Ocean conditions, forecast and tides for ATLAS (PROBABLY)

    ATLAS (PROBABLY) Ocean Conditions

    Monthly averages for ATLAS (PROBABLY), 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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