48m
    Cornwall & Devon, United Kingdom
    Start Point to Plymouth Sound & Eddystone

    CATHERINE ALLEN

    Best months: Jul–Sep

    Protected Area

    Start Point to Plymouth Sound & Eddystone

    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) - CATHERINE ALLEN 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 Catherine Allen, for us, is a proper Cornish wreck dive, deep enough to feel like an adventure without being extreme. She’s an 18-metre trawler, capsized back in ‘73 while dredging for cockles – a bit of a local legend, really. Lying at 48 metres, the visibility here can be temperamental, as is often the case in the UK, but when it’s good, the light penetrates just enough to make out her upright hull. We love finning along her deck, imagining the last moments before she went down. Keep an eye out for conger eels peering from every dark recess; they’re practically residents. Our favourite bit is the stern, where the prop is still largely intact, often covered in dead man's fingers and visited by inquisitive dogfish. This site really suits experienced divers comfortable with deeper wrecks and keen to explore a piece of local maritime history. It’s not about vibrant corals, it’s about the drama of the wreck and the surprising amount of life that now calls it home.

    Typical CATHERINE ALLEN 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.

    Today06:3117:3411h 3m daylightGolden hour 16:50

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    Conditions

    Ocean conditions, forecast and tides for CATHERINE ALLEN

    CATHERINE ALLEN Ocean Conditions

    Monthly averages for CATHERINE ALLEN, 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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