RELIANCE (PROBABLY)
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) - RELIANCE (PROBABLY) offers some of Cornwall & Devon's richest wreck diving. Water ranges 10-18°C, warmest July, August, September.
The Reliance (probably) isn’t your typical deep-water wreck dive. This isn't a site for hitting depth or seeing pelagics. We’re talking about a shallow scramble into a cave on the east side of Portland Bill, sometimes more of an archaeological treasure hunt than a dive. The wreck, a sailing vessel that ran aground in 1949, is scattered. You’ll find bits of hull and superstructure wedged into the rocks, some pieces still remarkably intact, offering a glimpse into its final moments. Our favourite way to experience this is on a calm day, at low tide, with a good snorkel or, if you're comfortable, a very shallow freedive. The light filters in beautifully, illuminating the encrusting life – anemones, barnacles, and small crabs hiding in the shadows. It’s an intimate exploration, feeling the cold rock and the old wood. You’ll spend your time piecing together the story of the ship, imagining the storm that brought it here. This is a site for the history buffs and those who appreciate the subtle beauty of coastal erosion and marine reclamation, rather than vibrant coral or big fish.
Typical RELIANCE (PROBABLY) Dive Profile
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.
Nearest Dive Centres to RELIANCE (PROBABLY)
Dive shops near RELIANCE (PROBABLY)
Dive Beyond Limited
Old Harbour Dive Centre
Divers Down
Mayim Mermaid Academy
Dorset Diving Services
Reviews for RELIANCE (PROBABLY)
Conditions
Ocean conditions, forecast and tides for RELIANCE (PROBABLY)
RELIANCE (PROBABLY) Ocean Conditions
Monthly averages for RELIANCE (PROBABLY), sourced from Open-Meteo marine data - nearest station: Open-Meteo marine grid (50.44, -2.73) (3km away)
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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