ULL (PROBABLY) - Cornwall & Devon

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.

Location
Cornwall & Devon, United Kingdom, Mediterranean & Europe
Coordinates
50.466816, -2.753500
Type
wreck
Maximum Depth
46m

Marine Protected Area: South of Portland

Best Time to Dive in Cornwall & Devon

The warmest water temperatures in Cornwall & Devon occur in January, averaging 9.6°C. The coolest conditions are in December at 9.6°C.

Monthly Water Temperatures

  • January: 9.6°C (air: 7.3°C)
  • February: 9.6°C (air: 8.4°C)
  • March: 9.6°C (air: 8.6°C)
  • April: 9.6°C (air: 10.1°C)
  • May: 9.6°C (air: 12.6°C)
  • June: 9.6°C (air: 15.2°C)
  • July: 9.6°C (air: 16.6°C)
  • August: 9.6°C (air: 17.1°C)
  • September: 9.6°C (air: 15.9°C)
  • October: 9.6°C (air: 13.5°C)
  • November: 9.6°C (air: 10.7°C)
  • December: 9.6°C (air: 8.7°C)

Nearby Dive Sites in Cornwall & Devon

Nearest Dive Centres to ULL (PROBABLY)

Marine Life in Cornwall & Devon

Home to 192 recorded species including 93 reef fish, 18 sharks & rays, 13 whales & dolphins, 11 crabs & lobsters, 11 other, 10 seagrass & algae.

Notable Species

Recommended Packing List for ULL (PROBABLY)

Based on average water temperature of 9.6°C.

  • Drysuit - water at 10°C demands a drysuit with thermal undergarments
  • Hood & Gloves (7mm+) - critical to prevent heat loss
  • Mask - essential for every dive
  • Fins
  • BCD - buoyancy compensator
  • Regulator - your most safety-critical piece of gear
  • Dive Computer - tracks depth, time, and NDL
  • Surface Marker Buoy (SMB) - essential for boat pickups
  • Dive Torch - useful for crevices and colour at depth
  • Underwater Camera - capture your diving memories