HMML 287 - Cornwall & Devon

HMML 287 might not be the most famous wreck in Cornwall, but we think it’s a real contender for a top spot. This isn't some colossal freighter, but a patrol launch from the First World War, sitting upright and surprisingly intact at 25 metres. Built from wood in Canada, you can really feel the history as you fin over her decks. The timbers are softened now, encrusted with dead man's fingers and anemones, which makes for some lovely wide-angle shots. We particularly love exploring the stern, where you can often find conger eels peering out from gaps in the hull. It’s a nice steady dive, usually with decent visibility, though we’d always suggest checking the tides for slack water. She’s a great dive for anyone comfortable at depth, offering a genuine sense of exploration without being overly challenging. If you’re into the quieter, more historical wrecks, this one’s definitely worth a look.

Location
Cornwall & Devon, United Kingdom, Mediterranean & Europe
Coordinates
50.525600, -0.809810
Type
wreck
Maximum Depth
25m

Marine Protected Area: Offshore Overfalls

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 HMML 287

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 HMML 287

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