Scapa Flow, Orkney, United Kingdom
    Tong Saltings

    Wreck of Portugal

    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) - Wreck of Portugal 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
    StandoutRich in charismatic marine life

    The HMS Starfish is more than just a lump of metal on the seabed, it’s a sombre reminder of wartime history, and we think that's why it holds such a draw. This S-class submarine, sunk in 1940, rests upright, largely intact, which is remarkable for a wreck in these waters. Descending through the North Sea’s often green embrace, the sheer silhouette of the submarine emerges, a dark mass against the sometimes murky backdrop. We love exploring the conning tower, imagining the cramped conditions within. Look closely and you will spot common whelks navigating the plating, while scaldfish often dart from the shadows of a torpedo tube. The wreck itself acts as a massive artificial reef, attracting poor cod and whiting, and we’ve even seen common seals make a curious pass or two. Diving the Starfish often means contending with a bit of current, so it’s definitely one for more experienced divers. Pick a day with good visibility, if you can, to really appreciate the scale of this historical site. It's an imposing dive, certainly, but deeply rewarding.

    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

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    Conditions

    Ocean conditions, forecast and tides for Wreck of Portugal

    Wreck of Portugal Ocean Conditions

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

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    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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