36m
    Cornwall & Devon, United Kingdom
    Slapton Ley

    HMS BENTON CASTLE

    Best months: Jul–Sep

    Protected Area

    Slapton Ley

    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) - HMS BENTON CASTLE 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 36m
    StandoutExceptional marine biodiversity

    The HMS BENTON CASTLE sits deep, a proper century-old wreck off the Devon coast. She was a trawler, requisitioned for patrol during WWI, and she sank in 1916. We love these older wrecks; they tell a story, even if it's just in the way the metal has buckled and twisted over time. Dropping down, the first thing that hits you is the sheer scale of the fishing nets draped across her. They’re a real hazard, so decent buoyancy and a knife are non-negotiable here. We usually find conger eels tucked into every dark corner, and the light filtering down through the green water gives the whole scene a moody, ethereal feel. Her boiler is still largely intact, a big, imposing cylinder that’s become home to a riot of plumose anemones. It’s a dive for those comfortable at depth, with good cold-water gear, and a genuine interest in maritime history. This isn't a casual splash; it's a deep exploration of a piece of the past, now very much a part of the seabed.

    Typical HMS BENTON CASTLE Dive Profile

    15m30mSafety Stop0m36m max~20 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

    Deep dive (36m) - monitor air consumption closely. Advanced certification recommended.

    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.

    Today06:3017:3311h 3m daylightGolden hour 16:49

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    Conditions

    Ocean conditions, forecast and tides for HMS BENTON CASTLE

    HMS BENTON CASTLE Ocean Conditions

    Monthly averages for HMS BENTON CASTLE, 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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