24m
    Intermediate
    Koh Rong Archipelago, Cambodia

    HTMS Chang Wreck

    Best months: Nov–Mar

    Why dive here

    HTMS Chang Wreck is a wreck dive in Koh Rong Archipelago, Cambodia. Water ranges 29-31°C, warmest April, May, June.

    Best timeNov–Mar
    WetsuitA 3mm shorty or thin full wetsuit
    Water29-31°C · warmest April, May, June
    CharacterWreck dive · max 24m

    The HTMS Chang, a former Thai naval vessel, sits upright in about 24 metres of water, making it one of our favourite wreck dives in Southeast Asia. It’s an intermediate dive, straightforward enough for confident newer wreck divers, but with plenty to explore for those with more experience. As you descend, the sheer size of the ship starts to reveal itself, looming out of the blue. We love the swim-throughs here, particularly navigating the cargo holds and engine room, where light shafts pierce the gloom, illuminating schools of fusiliers. She’s absolutely covered in life now. Look closely and you’ll spot pipefish clinging to the railings, and we often find cuttlefish camouflaged against the hull. The bridge is a tangled mass of soft corals, often swaying with the gentle surge. Our tip: go early in the morning for the best chance of spotting Jenkins' whiprays cruising around the deck. The visibility can vary, but even on an average day, the scale of the Chang makes it a truly impressive dive.

    Typical HTMS Chang Wreck Dive Profile

    10m20mSafety Stop0m24m max~30 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

    Depth of 24m - Advanced Open Water 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.

    Today06:0117:5611h 55m daylightGolden hour 17:28

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    Conditions

    Ocean conditions, forecast and tides for HTMS Chang Wreck

    HTMS Chang Wreck Ocean Conditions

    Monthly averages for HTMS Chang Wreck, sourced from Open-Meteo marine data - nearest station: Open-Meteo marine grid (10.73, 103.23) (49km away)

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    October Averages

    Sea Temperature

    30°C

    86°F · Range: 28.9–31.1°C

    Air Temperature

    27°C

    81°F

    Wind Speed

    5.83 m/s

    11.3 knots

    Atmospheric Pressure

    1009.3 hPa

    Based on 4 years of monitoring data · Data sources: Open-Meteo marine data

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