40m
    Nha Trang, Vietnam
    Hon Cau-Vinh Hao

    EIYO MARU

    Best months: Jan–Dec

    Protected Area

    Hon Cau-Vinh Hao

    Why dive here

    With 176+ marine species recorded in the area - including giant moray eels, sea turtles and pufferfish - EIYO MARU offers some of Nha Trang's richest wreck diving. Water ranges 25-30°C, warmest May, June, September.

    Marine lifeGiant Moray Eels, Sea Turtles and Pufferfish · 176+ species recorded
    Water25-30°C · warmest May, June, September
    CharacterWreck dive · max 40m
    StandoutExceptional marine biodiversity

    The Eiyo Maru is our favourite wreck in Nha Trang, hands down. Yes, it’s a deep dive, pushing 40 metres, but for those with the training, it’s absolutely worth the bottom time. This Japanese tanker, torpedoed in 1945, rests upright and largely intact, a testament to its formidable size – 140 metres long. Descending onto the main deck, you immediately feel the scale of the disaster, the sheer tonnage of the steel. We love exploring the huge cargo holds, now open to the blue, where schools of fusiliers swirl so thick they momentarily block the light. Keep an eye on the deck for octopus and the occasional large grouper lurking in the shadows. Penetration isn't really an option here, not safely anyway, but there's plenty to see on the exterior, especially around the stern with its massive rudder and prop. The engine room superstructure is also fascinating, a jumble of twisted metal colonised by sponges and colourful soft corals. This site really suits experienced wreck divers who appreciate history and a bit of a challenge.

    Typical EIYO MARU Dive Profile

    15m30m45mSafety Stop0m40m max~20 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

    Deep dive (40m) - monitor air consumption closely. Advanced certification recommended.

    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.

    Today05:3518:0012h 25m daylightGolden hour 17:32

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    Conditions

    Ocean conditions, forecast and tides for EIYO MARU

    EIYO MARU Ocean Conditions

    Monthly averages for EIYO MARU, sourced from Copernicus Marine satellite data

    August Averages

    Sea Temperature

    29.66°C

    85°F

    Current Speed

    3 cm/s

    Direction: E (90°)

    Chlorophyll-a

    0.108 mg/m³

    Clear water

    Salinity

    32.98 PSU

    Data sources: Copernicus Marine Service (EU)

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