55m
    Hoi An & Cu Lao Cham, Vietnam
    Cồn Cỏ

    CULLONG 115

    Best months: Feb–May

    Protected Area

    Cồn Cỏ

    Why dive here

    With 41+ marine species recorded in the area - including seahorses and sea turtles - CULLONG 115 offers some of Hoi An & Cu Lao Cham's richest wreck diving. Water ranges 24-31°C, warmest June, August, September.

    Best timeFeb–May
    WetsuitA 3mm full wetsuit
    Marine lifeSeahorses and Sea Turtles · 41+ species recorded
    Water24-31°C · warmest June, August, September
    CharacterWreck dive · max 55m

    Diving the *Cullong 115* is a real journey back in time, a sobering experience. This isn't a colourful reef dive, it’s a deep penetration into maritime history, lying at a profound 55m. The wreck itself, a large motor vessel, went down in 1986, and the years have turned its structure into an artificial reef, now draped in soft corals and sponges. We love the way schooling fusiliers blanket the deck, parting like a curtain as you approach, and the occasional lionfish that just hangs, perfectly still, in the silty gloom. Visibility can be a bit of a lottery here, but when it’s good, you can make out the scale of the ship, its holds yawning open, inviting exploration for those properly trained and equipped. Our favourite part has to be the stern, where the propeller still sits, an eerie, silent testament to its last voyage. This site is definitely for experienced wreck divers comfortable with deep profiles and limited natural light. We’d suggest a sidemount configuration for easier access into some of the tighter spaces, and definitely pack a good torch.

    Typical CULLONG 115 Dive Profile

    15m30m45m60mSafety Stop0m55m 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 55m 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.

    Today05:4217:3211h 50m daylightGolden hour 17:03

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    Conditions

    Ocean conditions, forecast and tides for CULLONG 115

    CULLONG 115 Ocean Conditions

    Monthly averages for CULLONG 115, sourced from Open-Meteo marine data + Copernicus Marine (EU) - nearest station: Open-Meteo marine grid (15.95, 108.48) (16km away)

    ExcellentGreatGoodFairPoor★Best monthsThis month

    October Averages

    Sea Temperature

    29°C

    84°F · Range: 27.3–31.1°C

    Current Speed

    12.08 cm/s

    Direction: SE (114.4°)

    Salinity

    32.06 PSU

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

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