48m
    Cornwall & Devon, United Kingdom
    South Dorset

    HARTBURN (PROBABLY)

    Best months: Jul–Sep

    Protected Area

    South Dorset

    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) - HARTBURN (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 48m
    StandoutExceptional marine biodiversity

    The Hartburn is one of those deeper wrecks that really sticks with you, a proper historical piece lying off Start Point. We love diving a wreck that has a story, and the Hartburn, sunk by a mine in 1917, definitely delivers on that front. Dropping down, you’ll find her upright on the seabed at 48 metres, quite intact for her age. The two large boilers are usually the first thing that resolves out of the murk, standing proud and covered in plumose anemones, often swaying gently in the current. It’s a big wreck, 92 metres long, so you won’t see it all in one dive, especially at this depth. We’d suggest focusing on the midships around the engine room, where the triple expansion engine is still recognisable, or exploring the bow section. Look for conger eels tucked into the darker recesses and jewel anemones adding splashes of colour to the rust. Visibility here can be hit or miss, typical for the English Channel, but when it's good, seeing the scale of her materialise from the blue is quite something. This is a dive for experienced wreck divers comfortable with deco, a proper deep exploration rather than a casual swim.

    Typical HARTBURN (PROBABLY) Dive Profile

    15m30m45mSafety Stop0m48m 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 48m 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.

    Today06:2417:2711h 3m daylightGolden hour 16:43

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    Conditions

    Ocean conditions, forecast and tides for HARTBURN (PROBABLY)

    HARTBURN (PROBABLY) Ocean Conditions

    Monthly averages for HARTBURN (PROBABLY), 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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