20m
    Beginner
    Gulf of Thailand, Thailand
    Mu ko Chumphon

    HTMS Prab 741, Wreck

    Best months: Dec–Jan

    Protected Area

    Mu ko Chumphon

    Why dive here

    With 158+ marine species recorded in the area - including blacktip reef sharks, blue-spotted stingrays, mobula rays (devil rays), whale sharks and pufferfish - HTMS Prab 741, Wreck offers some of Gulf of Thailand's richest wreck diving. Water ranges 28-31°C, warmest April, May, June.

    Best timeDec–Jan
    WetsuitA 3mm shorty or thin full wetsuit
    Marine lifeBlacktip Reef Sharks, Blue-Spotted Stingrays, Mobula Rays (Devil Rays), Whale Sharks and Pufferfish · 158+ species recorded
    Water28-31°C · warmest April, May, June
    CharacterWreck dive · max 20m
    StandoutExceptional marine biodiversity

    The HTMS Prab, a former patrol boat, sits upright in the Gulf at a very comfortable 20 metres. We love it because it’s surprisingly intact for its age, a proper penetrable wreck without being too demanding. You can fin right through the wheelhouse, seeing the gauges still in place, then drop down into the engine room, which always feels a bit eerie, like the crew just stepped out for a minute. It’s an excellent spot for newer wreck divers looking to get a feel for overhead environments. There's plenty of natural light filtering in, so you never feel truly enclosed. Fusiliers school in thick clouds over the bow, and we often spot substantial groupers tucked under the stern. Keep an eye out for batfish circling the mast, they’re usually quite curious. The Prab doesn't throw any curveballs, making it our pick for a relaxed afternoon dive, especially when the currents are mild, which they usually are here.

    Typical HTMS Prab 741, Wreck Dive Profile

    10m20mSafety Stop0m20m 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 20m - 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.

    Today06:1218:0811h 57m daylightGolden hour 17:40

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    Conditions

    Ocean conditions, forecast and tides for HTMS Prab 741, Wreck

    HTMS Prab 741, Wreck Ocean Conditions

    Monthly averages for HTMS Prab 741, Wreck, sourced from Open-Meteo marine data - nearest station: Open-Meteo marine grid (10.15, 99.7) (6km away)

    ExcellentGreatGoodFairPoor★Best monthsThis month

    October Averages

    Sea Temperature

    30°C

    86°F · Range: 29.1–31°C

    Air Temperature

    27°C

    81°F

    Wind Speed

    4.83 m/s

    9.4 knots

    Atmospheric Pressure

    1009.7 hPa

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

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