52m
    Cornwall & Devon, United Kingdom
    Trevose Head

    JOHN O'SCOTT

    Best months: Jul–Sep

    Protected Area

    Trevose Head

    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) - JOHN O'SCOTT 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 52m
    StandoutExceptional marine biodiversity

    The John O’Scott, a coal steamer torpedoed in 1918, lies quietly at 52 metres off the Cornish coast. We love this wreck for its sheer scale and the way it’s settled on the seabed, offering proper penetration opportunities if you’re suitably trained. Drop down the shot line and you’ll find the bow section rearing up, often shrouded in a shoal of pout, their eyes reflecting your torch beam. Swim along the deck, past the two massive boilers, and you get a real sense of its former life. Our favourite spot is the engine room, where you can often spot conger eels tucked into crevices, their heads slowly swaying. The visibility here can be truly exceptional on a good day, easily 15 to 20 metres, letting you appreciate the wreck’s full silhouette against the gloomy deep. This isn't a dive for the faint of heart or the inexperienced; it's a deep, dark plunge into history, best suited for technical divers who appreciate the solemn beauty of a well-preserved wreck far below the surface.

    Typical JOHN O'SCOTT Dive Profile

    15m30m45m60mSafety Stop0m52m 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 52m 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.

    Today06:3717:4011h 2m daylightGolden hour 16:55

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    Conditions

    Ocean conditions, forecast and tides for JOHN O'SCOTT

    JOHN O'SCOTT Ocean Conditions

    Monthly averages for JOHN O'SCOTT, 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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