16m
    Cornwall & Devon, United Kingdom
    Chesil Beach and Stennis Ledges

    BARMSTON

    Best months: Jul–Sep

    Protected Area

    Chesil Beach and Stennis Ledges

    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) - BARMSTON 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 16m
    StandoutExceptional marine biodiversity

    There’s something about a Cornish wreck, isn't there? The Barmston is a firm favourite of ours, not just for its history, but for how it’s settled on the seabed. She was originally the Martha Sayber, built way back in 1888, a steamship that met her end in 1918. You drop onto the main body of the wreck at about 16 metres, and it's quite intact for its age. We love how the two boilers stand proud, like ancient sentinels, and the triple expansion engine is a fantastic focus for exploration. You’ll often find conger eels tucked into the darker recesses of the machinery, and the plates are thick with jewel anemones, a vibrant splash of colour against the dull metal. Dogfish sometimes cruise over the main deck, their shadows gliding across the hull. It’s a site that really suits divers who enjoy a bit of penetration, though we’d always suggest staying within your comfort zone, as some areas can be quite silty. For us, the Barmston offers a tangible link to the past, a truly atmospheric dive, especially when the light filters down through the green Cornish water.

    Typical BARMSTON Dive Profile

    10mSafety Stop0m16m 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.

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

    Today06:2617:2811h 2m daylightGolden hour 16:44

    BARMSTON Wreck History

    Year Sunk

    1918

    Vessel Type

    cargo ship

    Cause

    torpedo

    The SS Barmston was a veteran steamship with a 30-year career that came to a violent end during the final year of World War I. Built in 1888 in Sunderland, this hardy vessel sailed the seas for decades before finding itself in the crosshairs of Germany's unrestricted submarine warfare campaign. On March 3, 1918, while sailing off the coast of Cornwall, the Barmston was spotted by the German submarine UB-57.

    A single torpedo sealed the steamer's fate, sending her to the seabed. She now rests at a depth of 16 meters, making her a fantastic and highly accessible wreck dive for a wide range of skill levels. Divers can explore the remains of this wartime casualty, including her two large boilers and triple-expansion engine. The wreck is a poignant memorial to the merchant sailors who risked everything during the Great War, and it now serves as a bustling artificial reef, teeming with the marine life of the English Channel.

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    Conditions

    Ocean conditions, forecast and tides for BARMSTON

    BARMSTON Ocean Conditions

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

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    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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