9m
    Scapa Flow, Orkney, United Kingdom
    Tong Saltings

    ARNISH

    Good diving all year

    Protected Area

    Tong Saltings

    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) - ARNISH 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 9m
    StandoutRich in charismatic marine life

    Arguably our favourite dive on the Churchill Barriers, the *Arinish* is a cracker, especially if you’re into the smaller, more personal wrecks. At just 9 metres, it’s a brilliant second dive or a relaxed long soak. We love that it’s right next to the barrier, meaning shore access is straightforward – just park up and kit up. You’re looking at a 37-meter steamship, the ex-Dagmar, built in 1869 and sunk in ’23. She’s surprisingly intact for her age, with that single boiler and compound engine still very much evident, giving the wreck a real sense of its working life. What you get here is a proper shallow historical wreck dive. We’d suggest heading out at high tide for the best visibility, but even with a bit of a ripple, the details are clear. You can trace her length easily, spotting the machinery and the shape of the hull. The wreck has become a home for so much life: you’ll find plump wrasse nosing around the plates, spider crabs tucked into crevices, and sometimes a cheeky conger eel peering out from under a beam. It’s a great site for photographers who want to get up close with both the history and the resident marine life without fighting currents or depth.

    Typical ARNISH Dive Profile

    5m10mSafety Stop0m9m max~60 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

    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.

    Today06:5217:3410h 42m daylightGolden hour 16:39

    ARNISH Wreck History

    Year Sunk

    1923

    Vessel Type

    cargo ship

    Cause

    unknown

    Resting in the famed wreck-diving haven of Scapa Flow, the Arnis is a relic from the golden age of steam. Built in 1869 as the Dagmar, this hardy steamship served for over 50 years before sinking in October 1923. The specific circumstances of its loss are not well-documented, adding a layer of mystery to its story. It lies in just 9 metres of water, making it an excellent and accessible dive for all levels of experience.

    Diving the Arnis is like stepping back in time. Despite over a century beneath the waves, its key features are often still recognisable. Divers can expect to find the single boiler and the remains of its 35-horsepower compound steam engine, the very heart of this Victorian-era vessel. The shallow depth allows for long, relaxed bottom times and excellent light on clear days, illuminating the hull sections and machinery now colonised by the vibrant marine life of the Orkney Isles.

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    Conditions

    Ocean conditions, forecast and tides for ARNISH

    ARNISH Ocean Conditions

    Monthly averages for ARNISH, 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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