20m
    Southern Islands, Singapore

    VALLEY FORGE

    Best months: Jan–Mar

    Why dive here

    With 263+ marine species recorded in the area - including blue-spotted stingrays, dugongs, giant moray eels, seahorses and sea turtles - VALLEY FORGE offers some of Southern Islands's richest wreck diving. Water ranges 28-31°C, warmest May, June, November.

    Best timeJan–Mar
    WetsuitA 3mm shorty or thin full wetsuit
    Marine lifeBlue-Spotted Stingrays, Dugongs, Giant Moray Eels, Seahorses and Sea Turtles · 263+ species recorded
    Water28-31°C · warmest May, June, November
    CharacterWreck dive · max 20m
    StandoutExceptional marine biodiversity

    The Valley Forge, off Singapore’s Southern Islands, is our pick for a proper wreck dive in these waters. It’s a steamship, sunk in 1959 with a cargo of wheat, and it sits upright at 20 metres. We love that it’s still relatively intact, offering a tangible sense of its past. You can trace the outline of its hull, seeing how the current has shaped the growth on its steel plates over the decades. Dropping down, the first thing you notice is the sheer scale, the bow rising like a dark wall from the silty seabed. Schools of fusiliers often swirl around the superstructure, a silver curtain against the darker metal. Look closely at the deck plating and you’ll find nudibranchs, often the colourful *Chromodoris magnifica*, clinging to the hydroids. Inside the deeper sections of the holds, if conditions allow penetration, it gets seriously dark, the only light filtering in from distant gaps, and you might spot a large grouper lurking. Visibility here can be tricky, often 5-8 metres, but on a good day, when the tide is just right and the silty bottom hasn't been stirred, it can push to 10-12, making the wreck feel immense. It's a dive for those who appreciate history and don't mind a bit of a challenge, definitely not one for absolute beginners.

    Typical VALLEY FORGE 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.

    Today05:4617:5212h 6m daylightGolden hour 17:24

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    Conditions

    Ocean conditions, forecast and tides for VALLEY FORGE

    VALLEY FORGE Ocean Conditions

    Monthly averages for VALLEY FORGE, sourced from Open-Meteo marine data - nearest station: Open-Meteo marine grid (1.18, 103.96) (8km away)

    ExcellentGreatGoodFairPoor★Best monthsThis month

    October Averages

    Sea Temperature

    30°C

    86°F · Range: 29.5–31.1°C

    Air Temperature

    27°C

    81°F

    Wind Speed

    4.07 m/s

    7.9 knots

    Atmospheric Pressure

    1009.8 hPa

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

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