25m
    Cornwall & Devon, United Kingdom
    Offshore Overfalls

    HMML 287

    Best months: Jul–Sep

    Protected Area

    Offshore Overfalls

    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) - HMML 287 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 25m
    StandoutExceptional marine biodiversity

    HMML 287 might not be the most famous wreck in Cornwall, but we think it’s a real contender for a top spot. This isn't some colossal freighter, but a patrol launch from the First World War, sitting upright and surprisingly intact at 25 metres. Built from wood in Canada, you can really feel the history as you fin over her decks. The timbers are softened now, encrusted with dead man's fingers and anemones, which makes for some lovely wide-angle shots. We particularly love exploring the stern, where you can often find conger eels peering out from gaps in the hull. It’s a nice steady dive, usually with decent visibility, though we’d always suggest checking the tides for slack water. She’s a great dive for anyone comfortable at depth, offering a genuine sense of exploration without being overly challenging. If you’re into the quieter, more historical wrecks, this one’s definitely worth a look.

    Typical HMML 287 Dive Profile

    10m20mSafety Stop0m25m max~30 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

    Depth of 25m - Advanced Open Water 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.

    Today06:1917:2211h 2m daylightGolden hour 16:38

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    Conditions

    Ocean conditions, forecast and tides for HMML 287

    HMML 287 Ocean Conditions

    Monthly averages for HMML 287, 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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