CASTOR 1 - Cornwall & Devon

The *Castor 1* is a proper, no-nonsense wreck dive, and we rate it as one of the best shallow wrecks in the area. Sunk in 1980, this old carrier sits bolt upright, almost intact, in just six metres of water. It’s perfect for newer wreck divers or anyone who just loves a long bottom time poking around a good structure. You can fin right along her deck, spotting the davits still in place, or peer down into the holds where schools of bib often hover, darting into the shadows as you approach. We love how much life has colonised the *Castor 1*. The superstructure is thick with plumose anemones, their white tentacles swaying gently, and you’ll often find dogfish resting amongst the debris. On a sunny day, the light filters through the kelp growing on the mast, creating an almost cathedral-like feel. Our advice: go on a slack tide, ideally after a few days of calm weather, and take your time. You’ll be surprised what you can find tucked into every nook and cranny.

Location
Cornwall & Devon, United Kingdom, Mediterranean & Europe
Coordinates
50.596100, -4.835233
Type
wreck
Maximum Depth
6m

Marine Protected Area: Dannonchapel and Tregardock

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 CASTOR 1

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 CASTOR 1

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