HMS MIGNONETTE - South Coast

The HMS Mignonette isn't just a hunk of metal on the seabed, it’s a tangible piece of history, resting at a respectable 51 metres. We love that it’s still so intact, a real time capsule from the First World War. Built in 1916, this Arabis-class sloop met its end just a year later from a mine, and it really shows you the brute force of that era’s naval warfare. Dropping down onto the Mignonette, you're immediately struck by its scale. Eighty-one metres long, it's a proper ship. The bow points proudly into the current, and you can still trace the lines of its four boilers and the massive triple-expansion engine. It’s an impressive sight, especially when the visibility is good, which it often is here on the South Coast. We usually find the best conditions mid-morning, before any afternoon chop really stirs things up. Exploring the Mignonette is like wandering through a sunken museum. The decks are largely gone, but the superstructure is still well-defined, offering plenty of nooks and crannies for curious divers. Look for the large propeller, often adorned with plumose anemones, their white tentacles gently swaying in the faint surge. Conger eels are often seen peeking out from behind plating, their heads like ancient gargoyles. Dogfish will sometimes make a casual pass, checking you out as you drift over the remains. It's a dive that rewards careful exploration, suited for experienced wreck divers comfortable with depth and perhaps a little chill.

Location
South Coast, Ireland, Mediterranean & Europe
Coordinates
51.508667, -8.925667
Type
wreck
Maximum Depth
51m

Marine Protected Area: Clonakilty Bay SPA

Best Time to Dive in South Coast

The warmest water temperatures in South Coast occur in January, averaging 8.8°C. The coolest conditions are in December at 8.8°C.

Monthly Water Temperatures

  • January: 8.8°C (air: 7.0°C)
  • February: 8.8°C (air: 8.3°C)
  • March: 8.8°C (air: 8.1°C)
  • April: 8.8°C (air: 9.3°C)
  • May: 8.8°C (air: 11.8°C)
  • June: 8.8°C (air: 14.2°C)
  • July: 8.8°C (air: 15.6°C)
  • August: 8.8°C (air: 15.8°C)
  • September: 8.8°C (air: 14.6°C)
  • October: 8.8°C (air: 12.4°C)
  • November: 8.8°C (air: 9.9°C)
  • December: 8.8°C (air: 8.1°C)

Nearby Dive Sites in South Coast

Nearest Dive Centres to HMS MIGNONETTE

Marine Life in South Coast

Home to 199 recorded species including 97 reef fish, 24 sharks & rays, 14 whales & dolphins, 14 other, 10 crabs & lobsters, 10 seagrass & algae.

Notable Species

Recommended Packing List for HMS MIGNONETTE

Based on average water temperature of 8.8°C.

  • Drysuit - water at 9°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