Alonissos Marine Park, Greece
    FENGARI SAMOTHRAKIS, ANATOLIKES AKTES, VRACHONISSIDA ZOURAFA KAI THALASSIA ZONI

    HMS Raglan

    Best months: Jul–Sep

    Protected Area

    FENGARI SAMOTHRAKIS, ANATOLIKES AKTES, VRACHONISSIDA ZOURAFA KAI THALASSIA ZONI

    Why dive here

    HMS Raglan is a wreck dive where divers can encounter dolphins and sea turtles. Water ranges 15-26°C, warmest July, August, September.

    Best timeJul–Sep
    WetsuitA 3mm shorty or thin full wetsuit
    Marine lifeDolphins and Sea Turtles
    Water15-26°C · warmest July, August, September
    CharacterWreck dive

    The HMS Raglan is a proper historical dive, one of our favourites in Alonissos. This isn't just a pile of metal; she’s a 1915 Abercrombie-class monitor, sunk during World War I, and you really feel that history as you descend. We love picking out the massive gun turrets, still largely intact, and the sheer scale of the ship is impressive as it sprawls across the seabed. Exploring the deck, you'll find clouds of damselfish flitting around the old anti-aircraft guns, and moray eels have made cosy homes in the deeper parts of the hull. The visibility here is usually excellent, giving you clear views of the entire wreck, often with sunbeams piercing through the blue to illuminate the structure. It’s a dive for those who appreciate wrecks with a story, and while it’s not overly challenging, the depth means it’s best suited for experienced divers comfortable with deeper profiles and careful buoyancy control. We always recommend going early in the morning; the light is softer and the currents tend to be calmer.

    Safety Notes

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

    Today06:2317:4411h 22m daylightGolden hour 17:08

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    Conditions

    Ocean conditions, forecast and tides for HMS Raglan

    HMS Raglan Ocean Conditions

    Monthly averages for HMS Raglan, sourced from Open-Meteo marine data + Copernicus Marine (EU) - nearest station: Open-Meteo marine grid (38.09, 24.15) (15km away)

    ExcellentGreatGoodFairPoor★Best monthsThis month

    October Averages

    Sea Temperature

    23°C

    73°F · Range: 21–25.6°C

    Current Speed

    1.41 cm/s

    Direction: SW (225°)

    Chlorophyll-a

    0.13 mg/m³

    Clear water

    Salinity

    34.63 PSU

    Based on 4 years of monitoring data · Data sources: Open-Meteo marine data + Copernicus Marine (EU)

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