15m
    Cornwall & Devon, United Kingdom
    Browndown

    RTC NO.9

    Best months: Jul–Sep

    Protected Area

    Browndown

    Why dive here

    With 176+ marine species recorded in the area - including blue sharks, dolphins, dwarf minke whales, humpback whales and ocean sunfish (mola mola) - RTC NO.9 offers some of Cornwall & Devon's richest wreck diving. Water ranges 10-18°C, warmest July, August, September.

    Best timeJul–Sep
    WetsuitA 5mm wetsuit
    Marine lifeBlue Sharks, Dolphins, Dwarf Minke Whales, Humpback Whales and Ocean Sunfish (Mola Mola) · 176+ species recorded
    Water10-18°C · warmest July, August, September
    CharacterWreck dive · max 15m
    StandoutExceptional marine biodiversity

    Dropping onto the RTC NO.9 is like stepping into a cold case. This single-shaft sailing vessel, sunk in 1893 after a run-in with HMS Endymion, lies broken but still intriguing at 15 metres. You’ll find her bones scattered, a jumble of ribs and plating that now forms an artificial reef. Conger eels are often tucked into the crevices, and you might spot dogfish resting on the silty seabed nearby. It's a dive for those who appreciate maritime history and the way the sea reclaims its own, offering a quiet, contemplative exploration rather than dramatic coralscapes.

    Typical RTC NO.9 Dive Profile

    5m10m15mSafety Stop0m15m max~50 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

    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.

    Today06:2117:2311h 2m daylightGolden hour 16:38

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    Conditions

    Ocean conditions, forecast and tides for RTC NO.9

    RTC NO.9 Ocean Conditions

    Monthly averages for RTC NO.9, sourced from Open-Meteo marine data - nearest station: Open-Meteo marine grid (50.44, -2.73) (3km away)

    ExcellentGreatGoodFairPoor★Best monthsThis month

    October Averages

    Sea Temperature

    17°C

    62°F · Range: 15.1–17.5°C

    Air Temperature

    13°C

    56°F

    Wind Speed

    8.14 m/s

    15.8 knots

    Atmospheric Pressure

    1011 hPa

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

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