42m
    Tioman Island, Malaysia

    TJAHAJA BULAN

    Best months: Jan–May

    Why dive here

    With 107+ marine species recorded in the area - including blacktip reef sharks, sea turtles, whale sharks and pufferfish - TJAHAJA BULAN offers some of Tioman Island's richest wreck diving. Water ranges 28-31°C, warmest April, May, November.

    Best timeJan–May
    WetsuitA 3mm shorty or thin full wetsuit
    Marine lifeBlacktip Reef Sharks, Sea Turtles, Whale Sharks and Pufferfish · 107+ species recorded
    Water28-31°C · warmest April, May, November
    CharacterWreck dive · max 42m
    StandoutRich in charismatic marine life

    Tjhahaja Bulan, pronounced "Cha-ha-ya Boo-lan," is one of our favourite deep wrecks off Tioman, and it’s always a good call for a second dive when you’ve had enough of the shallow reefs. She went down in 1973, taking on water in a storm, and settled upright at 42 metres. We love that you can still feel the history here – imagining those nine crew members being rescued as she slipped beneath the waves. It’s a proper penetration dive if you’re qualified, with plenty of entry points into the holds and engine room. Inside, the light plays through gaps in the hull, illuminating schools of batfish that hang in the gloom. Outside, giant groupers often lurk in the shadows, and we’ve seen marble rays cruising over the sand nearby. The deck is carpeted in soft corals, purple and orange, with nudibranchs inching their way across the rusty plates. It’s a dive for advanced divers, obviously, but the rewards are considerable, especially if you catch it on a calm day with good visibility.

    Typical TJAHAJA BULAN Dive Profile

    15m30m45mSafety Stop0m42m 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 42m 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.

    Today05:4717:5112h 5m daylightGolden hour 17:24

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    Conditions

    Ocean conditions, forecast and tides for TJAHAJA BULAN

    TJAHAJA BULAN Ocean Conditions

    Monthly averages for TJAHAJA BULAN, sourced from Open-Meteo marine data + Copernicus Marine (EU) - nearest station: Open-Meteo marine grid (2.79, 104.21) (0km away)

    ExcellentGreatGoodFairPoor★Best monthsThis month

    October Averages

    Sea Temperature

    30°C

    86°F · Range: 29.2–31.4°C

    Current Speed

    8.49 cm/s

    Direction: SE (135°)

    Salinity

    31.88 PSU

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

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