ULL (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) - ULL (PROBABLY) offers some of Cornwall & Devon's richest wreck diving. Water ranges 10-18°C, warmest July, August, September.
The ULL, formerly known by a string of names like Tosca and Peritia, is a proper deep dive off the coast of Cornwall. At 46 metres, it’s certainly not for the casual diver; this is one for those with the training and comfort at depth. We love the history here, imagining this steamship, built in Flensburg back in 1880, finally coming to rest in 1917. What you get is a coherent wreck, still largely intact despite its age and depth. We find the single boiler a real focal point, and the compound expansion engine is still recognisable, a testament to its sturdy build. Visibility can be a challenge, as with many UK wrecks, but on a good day, the ULL reveals itself through the silty water, draped in anemones and dead man's fingers. Ling often lurk in the shadowed corners, and you might spot a few dogfish resting on the deck plates. It’s a quiet, reflective dive, feeling the chill of the deep, a tangible connection to maritime history. Come prepared for the cold and the depth, and you’ll find a rewarding exploration here.
Typical ULL (PROBABLY) Dive Profile
Illustrative profile based on site depth and type. Actual dive profiles vary - always follow your dive computer and training.
Safety Notes
Maximum depth 46m 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.
Nearest Dive Centres to ULL (PROBABLY)
Dive shops near ULL (PROBABLY)
Dive Beyond Limited
Old Harbour Dive Centre
Edge Watersports
Reviews for ULL (PROBABLY)
Conditions
Ocean conditions, forecast and tides for ULL (PROBABLY)
ULL (PROBABLY) Ocean Conditions
Monthly averages for ULL (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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