Sumatra, Indonesia

    HMS Subtle

    Best months: Jan–Feb

    Why dive here

    HMS Subtle is a wreck dive where divers can encounter mantis shrimp. Water ranges 29-32°C, warmest April, May, June.

    Best timeJan–Feb
    WetsuitA 3mm shorty or thin full wetsuit
    Marine lifeMantis Shrimp
    Water29-32°C · warmest April, May, June
    CharacterWreck dive

    The HMS Subtle wreck in Sumatra really hits different. We’ve done our fair share of submarine dives, but there’s a quiet solemnity here that sets it apart. Dropping down, you start to make out the unmistakable lines of an S-class sub, resting on its side, a ghost from 1944. It’s not a site for poking into every nook and cranny; the delicate integrity means we treat it with respect, admiring the structure from the outside, imagining the lives onboard. What we really love is how the ocean has just taken it back. The conning tower is a fantastic spot, completely encrusted with sponges and whip corals, home to dozens of glassfish shimmering in the ambient light. Keep an eye out for the resident batfish school; they often orbit the stern, silhouetted against the blue. It’s a dive for those who appreciate history as much as marine life, a contemplative experience rather than a frantic exploration. The conditions can vary, so we always suggest checking local reports for current strength – sometimes there’s a gentle drift that makes the descent feel like flying.

    Safety Notes

    Wreck site - avoid penetration without wreck diving certification. Watch for sharp metal and entanglement hazards.

    Today05:2817:2812h 0m daylightGolden hour 17:00

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    Conditions

    Ocean conditions, forecast and tides for HMS Subtle

    HMS Subtle Ocean Conditions

    Monthly averages for HMS Subtle, sourced from Open-Meteo marine data - nearest station: Open-Meteo marine grid (-0.93, 103.77) (179km away)

    ExcellentGreatGoodFairPoor★Best monthsThis month

    October Averages

    Sea Temperature

    31°C

    88°F · Range: 30.2–32.2°C

    Air Temperature

    26°C

    79°F

    Wind Speed

    2.5 m/s

    4.9 knots

    Atmospheric Pressure

    1010.1 hPa

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

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