51m
    Cornwall & Devon, United Kingdom
    Kelsey Head

    REDLINE NO.1

    Best months: Jul–Sep

    Protected Area

    Kelsey 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) - REDLINE NO.1 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 51m
    StandoutExceptional marine biodiversity

    The Redline No.1 is a proper deep dive, sitting at 51 metres, making it one for experienced tech divers with the right kit. This tanker, built just a year before she sank in 1925, flipped over in a nasty storm off Trevose Head. We love a wreck with a story, and the Redline’s is a tragic one, taking nine lives with her. When you drop down, the visibility in this part of the Channel can be hit or miss, but on a good day, the wreck reveals herself slowly from the gloom. She’s not massive, 36.6 metres long, but what’s left is surprisingly intact in places, considering the weather that sank her. We’d suggest focusing your exploration on the midships, where the structure is most defined, and you often find the best invertebrate life – colourful jewel anemones clinging to the plates, and often a conger eel or two peeking from a dark hole. It’s a quiet, atmospheric dive, perfect for those who appreciate history and the slow reclamation of steel by the sea.

    Typical REDLINE NO.1 Dive Profile

    15m30m45mSafety Stop0m51m 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 51m 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.

    Today06:3817:4011h 3m daylightGolden hour 16:56

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    Conditions

    Ocean conditions, forecast and tides for REDLINE NO.1

    REDLINE NO.1 Ocean Conditions

    Monthly averages for REDLINE NO.1, 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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