55m
    Cornwall & Devon, United Kingdom
    Trevose Head

    KAI (POSSIBLY)

    Best months: Jul–Sep

    Protected Area

    Trevose Head

    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) - KAI (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 55m
    StandoutExceptional marine biodiversity

    Okay, so Kai, the old steamship. This one is deep, proper deep, at 55m. It’s a serious dive, not one for the casual weekend splash. But for those who are trained and equipped for it, Kai offers a rewarding sense of history, a real connection to the wartime past off the Cornish coast. We love the way the wreck has settled, largely intact, offering glimpses into its operational life. You’ll find the two boilers standing proud, a real focal point, and the triple expansion engine still largely recognisable. It's not a wreck overflowing with soft corals, this is the UK after all, but the steelwork itself provides plenty of nooks and crannies for resident wrasse and squat lobsters. We’ve had some truly tranquil dives here, with visibility occasionally opening up to a good 15-20 metres, which at this depth feels like a gift. Our advice? Go on a slack tide, obviously, and keep an eye on the thermoclines, they can shift quickly. The sheer depth means careful planning is essential, but if you’re into technical wreck diving, Kai is a standout.

    Typical KAI (POSSIBLY) Dive Profile

    15m30m45m60mSafety Stop0m55m 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 55m 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.

    Today06:3717:3911h 2m daylightGolden hour 16:54

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    Conditions

    Ocean conditions, forecast and tides for KAI (POSSIBLY)

    KAI (POSSIBLY) Ocean Conditions

    Monthly averages for KAI (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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