54m
    Cornwall & Devon, United Kingdom
    Slapton Ley

    GARM (POSSIBLY)

    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) - GARM (POSSIBLY) 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 54m
    StandoutExceptional marine biodiversity

    The GARM is a deep one, lying at 54m, and a real treat for those with the training to get there. We’ve always had a soft spot for wrecks that feel like a snapshot in time, and this steamship, sunk by a U-boat in 1917, definitely delivers. Dropping down, you'll find the vessel largely intact, settled upright on the seabed. It’s a proper expedition, the kind where the light fades to an ethereal blue, and the wreck emerges from the gloom. The triple expansion engine is a favourite spot, still standing proud, heavily encrusted now with anemones and dead man’s fingers. You'll often find conger eels peering from the deeper recesses of the holds, and lobsters tucked into any available crevice. We’d suggest focusing on your trim and buoyancy here; there's plenty to penetrate for qualified divers, but it’s easy to stir up the fine silt. It’s a proper technical dive, and while there aren't many frills, the sense of history and the excellent preservation make it a genuinely rewarding experience for experienced wreck divers.

    Typical GARM (POSSIBLY) Dive Profile

    15m30m45m60mSafety Stop0m54m 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 54m 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.

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

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    Conditions

    Ocean conditions, forecast and tides for GARM (POSSIBLY)

    GARM (POSSIBLY) Ocean Conditions

    Monthly averages for GARM (POSSIBLY), 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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