46m
    Nha Trang, Vietnam
    Nha Phu-Hon Heo

    HONAN MARU (POSSIBLY)

    Best months: Jan–Apr

    Protected Area

    Nha Phu-Hon Heo

    Why dive here

    With 176+ marine species recorded in the area - including giant moray eels, sea turtles and pufferfish - HONAN MARU (POSSIBLY) offers some of Nha Trang's richest wreck diving. Water ranges 25-31°C, warmest May, June, September.

    Best timeJan–Apr
    WetsuitA 3mm full wetsuit
    Marine lifeGiant Moray Eels, Sea Turtles and Pufferfish · 176+ species recorded
    Water25-31°C · warmest May, June, September
    CharacterWreck dive · max 46m
    StandoutExceptional marine biodiversity

    The Honan Maru, or what we strongly suspect is her, offers a deep, moody dive that’s a real contrast to Nha Trang’s shallower reefs. Dropping to 46 metres, you’re looking at a proper technical dive, so come prepared with your certs and gas. It’s a huge old tanker, sunk in ‘45, and you can really feel that history as you descend into the gloom. We love the scale of this wreck. At 121 metres long, you can spend an entire dive just exploring a fraction of it, peering into vast cargo holds that are now home to schools of snapper and barracuda. The bow section is particularly intact and our favourite spot, often shrouded in a haze of glassfish. Visibility here can be hit or miss; on a good day, it’s 15 metres, but we’ve also dived it in 5 metres, which adds to the atmospheric, eerie feel. Look out for the resident moray eels that have made the collapsed superstructure their home. This site is for experienced wreck divers who appreciate a challenging, historical dive over colourful corals.

    Typical HONAN MARU (POSSIBLY) Dive Profile

    15m30m45mSafety Stop0m46m max~15 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

    Maximum depth 46m exceeds recreational limits (40m). Technical diving certification and equipment required.

    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.

    Today05:3217:2711h 55m daylightGolden hour 16:59

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    Conditions

    Ocean conditions, forecast and tides for HONAN MARU (POSSIBLY)

    HONAN MARU (POSSIBLY) Ocean Conditions

    Monthly averages for HONAN MARU (POSSIBLY), sourced from Open-Meteo marine data + Copernicus Marine (EU) - nearest station: Open-Meteo marine grid (12.34, 109.32) (19km away)

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    October Averages

    Sea Temperature

    30°C

    86°F · Range: 28–31.8°C

    Current Speed

    1.41 cm/s

    Direction: SE (135°)

    Chlorophyll-a

    0.104 mg/m³

    Clear water

    Salinity

    31.6 PSU

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

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