15m
    Alonissos Marine Park, Greece
    SOUNIO - NISIDA PATROKLOU KAI PARAKTIA THALASSIA ZONI

    HMSM Triumph (Possibly)

    Best months: Jul–Sep

    Protected Area

    SOUNIO - NISIDA PATROKLOU KAI PARAKTIA THALASSIA ZONI

    Why dive here

    HMSM Triumph (Possibly) 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 · max 15m

    Okay, so let's talk about the HMSM Triumph, or what we strongly suspect is her, out in Alonissos. This isn't just a dive, it's a dive into history, and a pretty sombre one at that. Dropping down to 15 metres, you really feel the weight of what happened here. The sub lies broken, a silent testament to the 64 souls lost when she vanished without a trace in WWII. We love the sheer mystery, the knowledge that you’re touching a piece of the past that eluded discovery for eight decades. It’s an eerie, almost reverent feeling finning past the twisted metal, the dark openings where the torpedo tubes might have been. Sunlight filters down, catching the metallic sheen of the hull, now draped in green algae and orange sponges. You'll see schools of damselfish flitting through the skeletal remains, octopuses peeking from crevices, and the occasional moray eel snaking out of a porthole. This site really suits divers who appreciate historical wrecks and aren't afraid of a reflective experience. It’s not about bright corals, it’s about the whispers of a different time, and the vibrant new life that has claimed this solemn memorial.

    Typical HMSM Triumph (Possibly) Dive Profile

    5m10m15mSafety Stop0m15m max~50 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.

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

    Today06:2917:5511h 26m daylightGolden hour 17:20

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    Conditions

    Ocean conditions, forecast and tides for HMSM Triumph (Possibly)

    HMSM Triumph (Possibly) Ocean Conditions

    Monthly averages for HMSM Triumph (Possibly), 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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