54m
    Cornwall & Devon, United Kingdom
    South of Portland

    MERCHANT ROYAL

    Best months: Jul–Sep

    Protected Area

    South of Portland

    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) - MERCHANT ROYAL 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 54m
    StandoutExceptional marine biodiversity

    The Merchant Royal is a proper deep wreck, sitting bolt upright at 54m and demanding respect. It’s less about poking around for small stuff and more about appreciating the sheer scale of the thing. We love seeing how the metalwork has become a home, with enormous ling often lurking in the superstructure and conger eels peering from every dark recess. Diving the Royal means planning your gas carefully; bottom time here is precious. We’d suggest focusing on the midships, where you can still make out the three massive boilers and the triple-expansion engine. The hull itself is slowly collapsing, but you get a real sense of its former grandeur, a testament to a bygone era of steamships. Visibility can be hit or miss, typical for the UK, but when it’s good, the light penetration creates an ethereal glow around the upper decks. This one’s for experienced technical divers, no question, and it really rewards patience and a steady hand. You’re not just diving a wreck; you’re diving into history.

    Typical MERCHANT ROYAL Dive Profile

    15m30m45m60mSafety Stop0m54m 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 54m 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.

    Today06:2617:2911h 3m daylightGolden hour 16:45

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    Conditions

    Ocean conditions, forecast and tides for MERCHANT ROYAL

    MERCHANT ROYAL Ocean Conditions

    Monthly averages for MERCHANT ROYAL, 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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