16m
    Beginner
    Cornwall & Devon, United Kingdom
    Plymouth Sound Shores and Cliffs

    Glen Strathallen

    Best months: Jul–Sep

    Protected Area

    Plymouth Sound Shores and Cliffs

    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) - Glen Strathallen 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 16m
    StandoutExceptional marine biodiversity

    The Glen Strathallen, sunk deliberately in 1970 as a training wreck, is just fantastic for newer divers. At a comfortable 16 metres, it’s shallow enough for longer bottom times and really allows you to soak in the details. We love dropping down and finding ourselves right on the bow, then slowly finning our way back along the deck. The ship's structure is still largely intact, which means you can poke around in cargo holds and peer into the bridge area. Expect to see quite a few conger eels tucked into the darker recesses, and the decks are covered in plumose anemones, creating these soft, feathery carpets. It’s a great site to practice your wreck diving skills without needing advanced certifications, and the relatively sheltered position often means good visibility, especially on a neap tide. Our favourite part is lingering around the stern, where the prop shaft housing offers some nice swim-through opportunities.

    Typical Glen Strathallen Dive Profile

    10mSafety Stop0m16m 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.

    Today06:3317:3611h 3m daylightGolden hour 16:51

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    Conditions

    Ocean conditions, forecast and tides for Glen Strathallen

    Glen Strathallen Ocean Conditions

    Monthly averages for Glen Strathallen, 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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