19m
    Scapa Flow, Orkney, United Kingdom
    Switha

    RADIATION

    Good diving all year

    Protected Area

    Switha

    Why dive here

    With 140+ marine species recorded in the area - including blue whales, dolphins, dwarf minke whales, humpback whales and ocean sunfish (mola mola) - RADIATION offers some of Scapa Flow, Orkney's richest wreck diving. Water ranges 8-14°C, warmest July, August, September.

    Best timeYear-round
    WetsuitA drysuit
    Marine lifeBlue Whales, Dolphins, Dwarf Minke Whales, Humpback Whales and Ocean Sunfish (Mola Mola) · 140+ species recorded
    Water8-14°C · warmest July, August, September
    CharacterWreck dive · max 19m
    StandoutRich in charismatic marine life

    Radiation isn't about huge schools of fish or delicate corals, it's about the sheer immersion in a purpose-sunk wreck, completely colonised by life. This ex-longliner, now resting upright at 19 metres, makes for a perfect multi-level dive. We love working our way around the wheelhouse, seeing the gauges and controls still largely intact, before dropping down to explore the hold. It’s a proper hands-on experience, often with a slight chill in the water that reminds you exactly where you are. Visibility usually hovers around 8-10 metres, sometimes more, sometimes less, but it’s always enough to appreciate the scale. Look out for the resident wrasse darting between the deck fittings and the plump plumose anemones that cling to every surface. Our favourite moments are pausing by the bow, watching the light filter down through the often-calm Scapa Flow surface, highlighting the wreck’s silhouette. It's an ideal site for anyone keen on wreck penetration practice, or just enjoying a relaxed dive on a structure that feels genuinely robust.

    Typical RADIATION Dive Profile

    10m20mSafety Stop0m19m 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 19m - Advanced Open Water certification recommended.

    Wreck site - avoid penetration without wreck diving certification. Watch for sharp metal and entanglement hazards.

    Cold water this month (avg 13°C). Drysuit or thick wetsuit (7mm+) recommended.

    Always perform a 3-minute safety stop at 5m before surfacing.

    Today06:3917:1910h 40m daylightGolden hour 16:24

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    Conditions

    Ocean conditions, forecast and tides for RADIATION

    RADIATION Ocean Conditions

    Monthly averages for RADIATION, sourced from Open-Meteo marine data - nearest station: Open-Meteo marine grid (58.64, -3.16) (8km away)

    ExcellentGreatGoodFairPoor★Best monthsThis month

    October Averages

    Sea Temperature

    13°C

    55°F · Range: 11.4–13.8°C

    Air Temperature

    10°C

    50°F

    Wind Speed

    9.26 m/s

    18.0 knots

    Atmospheric Pressure

    1005.3 hPa

    Based on 4 years of monitoring data · Data sources: Open-Meteo marine data

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