HMS MAROJAM - Cornwall & Devon

The HMS Marojam, or what’s left of her anyway, is a great dive for when the weather turns a bit frisky in Bigbury Bay. She was an Anchusa-class sloop, meant to be renamed the President and become a drill ship, but fate had other plans back in 1921. Now, she’s well broken up, scattered across the seabed at around 12 meters, but that’s precisely her charm. We love how accessible she is, even when there's a bit of swell. You’re not getting a grand, intact wreck, but you are getting a proper archaeological dive, exploring her ribs and plating that are now home to a surprising amount of life. Look closely among the twisted metal for the vibrant jewel anemones, they’re everywhere, adding splashes of orange and pink to the otherwise muted tones. You’ll often find dogfish tucked into the sand nearby, and sometimes a curious grey seal might even come to investigate. It’s a shallower dive, making for longer bottom times, and it’s a brilliant spot for honing wreck penetration skills on the smaller, more open sections without feeling too committing. Our pick for a slightly breezy afternoon.

Location
Cornwall & Devon, United Kingdom, Mediterranean & Europe
Coordinates
51.617245, -5.021360
Type
wreck
Maximum Depth
0m

Marine Protected Area: Castlemartin Coast

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 MAROJAM

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 MAROJAM

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