CASTLE CRAG - Cornwall & Devon

Castle Crag is a wreck we always recommend for newer divers, or anyone who just wants a relaxed potter around a piece of history. This steamship went down in 1883, and honestly, the wreck site feels like a time capsule. You’re only ever in about six metres of water, so bottom time isn’t an issue. We love drifting over the hull plates, running our hands along the cold, textured iron. What makes it special for us is the way the marine life has completely integrated with the structure. The boilers are still pretty intact, and they’re covered in dead man's fingers, orange and purple, swaying gently. Look closely among the wreckage and you’ll often spot dogfish tucked into crevices, their eyes blinking slowly. You’ll also find plenty of spider crabs clambering over the plates, their shells camouflaged with bits of seaweed. It's a genuinely calm, approachable dive where you can really take your time and soak it all in. If you’re looking for a gentle introduction to wreck diving, or just a peaceful afternoon under the waves, Castle Crag is a solid pick.

Location
Cornwall & Devon, United Kingdom, Mediterranean & Europe
Coordinates
50.633500, -1.452000
Type
wreck
Maximum Depth
6m

Marine Protected Area: Tennyson

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 CASTLE CRAG

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 CASTLE CRAG

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