Cornwall & Devon, United Kingdom
    The Needles

    HMS Pomone

    Best months: Jul–Sep

    Protected Area

    The Needles

    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 Pomone offers some of Cornwall & Devon's richest reef 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
    CharacterReef dive
    StandoutExceptional marine biodiversity

    The HMS Pomone, grounded off The Manacles in 1811, gives us a proper glimpse into nautical history. This isn't a single, intact wreck. Instead, she’s scattered across the seabed, an archaeological site really, with parts of her hull and timbers strewn about. We love picking through the debris field, imagining the chaos of the wrecking, the sheer power of the sea against a wooden ship. The fragmented nature means you're always discovering something new, perhaps a cannon peeking out from the sand, or some lead sheathing revealing itself after a scour. Among the scattered ribs and plating, life thrives. Congers find perfect bolt holes in the deeper sections, their heads poking out with a wary stare. Butterfly blennies flit between the wreckage, a flash of colour against the darkened timbers, and we often spot Devonshire cup corals clinging to the more stable pieces of hull. This site suits divers who appreciate history and enjoy a bit of an archaeological treasure hunt rather than a complete structure. Dive it on a calm day, ideally on a slack tide, to really take your time examining the details and appreciating the scale of the wrecking.

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    Conditions

    Ocean conditions, forecast and tides for HMS Pomone

    HMS Pomone Ocean Conditions

    Monthly averages for HMS Pomone, sourced from Open-Meteo marine data - nearest station: Open-Meteo marine grid (50.44, -2.73) (3km away)

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    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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