42m
    Cornwall & Devon, United Kingdom
    South of Portland

    INISINVER

    Best months: Jul–Sep

    Protected Area

    South of Portland

    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) - INISINVER 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 42m
    StandoutExceptional marine biodiversity

    The Inisinver is one of those wrecks we keep coming back to, a proper deep dive with a story. She went down in 1930 after hitting something submerged, and she lies proud at 42 metres, a solid target on the echo sounder. We love the way she’s mostly intact, offering plenty of nooks and crannies for exploration, especially if you’re comfortable with overhead environments. Her prop is a real draw, often covered in jewel anemones that pulse with colour in your torch beam, and we've spotted some impressively large conger eels lurking in the deeper holds. Visibility here can be a bit of a gamble, but when it’s good, the sheer scale of her structure is impressive, the hull plates draped in dead man’s fingers and hydroids. It’s a site that rewards experienced divers, those comfortable with the depth and ready for a proper wreck dive, rather than a drift over a reef. Our favourite time to visit is late summer; the water’s a touch warmer, and often calmer, making the descent and decompression much more pleasant.

    Typical INISINVER Dive Profile

    15m30m45mSafety Stop0m42m 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 42m 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.

    Today06:2717:2911h 3m daylightGolden hour 16:45

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    Conditions

    Ocean conditions, forecast and tides for INISINVER

    INISINVER Ocean Conditions

    Monthly averages for INISINVER, 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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