HMS SESAME (PROBABLY) - Cornwall & Devon

The HMS Sesame, or what we strongly suspect is the Sesame, rests upright in about 20 metres of water off the coast of Cornwall. It’s a proper dive, feeling its history as you descend into the often-murky green. We love the way the wreck has settled, largely intact, offering easy penetration for those with the right training and a good guide. You'll find schools of pollack hanging in the superstructure, darting into the shadows as you approach. Keep an eye out for conger eels too, peering from the deeper recesses. While the visibility can be challenging, typically around 5-10 metres on an average day, we think that only adds to the atmosphere, making those moments when a feature emerges from the gloom all the more dramatic. Our favourite part is exploring the bridge area, though we’d suggest going at slack water, as currents here can pick up. It's a dive for those who appreciate a good wreck with a story, not just perfect visibility.

Location
Cornwall & Devon, United Kingdom, Mediterranean & Europe
Coordinates
49.458400, -0.913800
Type
wreck
Maximum Depth
20m

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 HMS SESAME (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 HMS SESAME (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