Wreck of Andalina - Scapa Flow, Orkney

The HMS Seawolf, an S-class submarine, rests in the chill, often murky embrace of the North Sea off Denmark. This isn't a dive for the faint of heart, or for those seeking vibrant coral. What you get here is pure, unadulterated wreck diving, a deep, silent encounter with history. We love how the Seawolf’s lines are still so clear, a haunting silhouette against the low visibility. You can make out the conning tower, the torpedo tubes, and the sheer scale of this war machine. Our favourite part is exploring the deck gun, often swarming with schools of juvenile cod and Pollock, darting in and out of the gun mounting. Look closely and you’ll find plenty of Friendly Blade Shrimp tucked into crevices, and we often spot Norway Lobsters scuttling across the seabed nearby. The wreck acts like an artificial reef, drawing in grey gurnard and common dragonets, even the occasional harbour porpoise can be spotted on the surface if you’re lucky. Visibility can be challenging, so this dive is best for experienced wreck divers comfortable with limited light and potentially strong currents. Come prepared for an atmospheric, introspective dive rather than a colourful spectacle. The Seawolf demands respect, and it rewards divers with an unforgettable connection to the past.

Location: Scapa Flow, Orkney, United Kingdom, Mediterranean & Europe
Coordinates: 58.193558, -6.385759
Type: wreck

Marine Protected Area: Tong Saltings

Best Time to Dive in Scapa Flow, Orkney

The warmest water temperatures in Scapa Flow, Orkney occur in January, averaging 8.4°C. The coolest conditions are in December at 8.4°C.

Monthly Water Temperatures

January: 8.4°C (air: 5.5°C)
February: 8.4°C (air: 5.3°C)
March: 8.4°C (air: 5.9°C)
April: 8.4°C (air: 6.8°C)
May: 8.4°C (air: 9.7°C)
June: 8.4°C (air: 12.4°C)
July: 8.4°C (air: 13.2°C)
August: 8.4°C (air: 13.7°C)
September: 8.4°C (air: 12.7°C)
October: 8.4°C (air: 10.2°C)
November: 8.4°C (air: 8.0°C)
December: 8.4°C (air: 5.8°C)

Nearest Dive Centres to Wreck of Andalina

The Diving Cellar

Marine Life in Scapa Flow, Orkney

Home to 155 recorded species including 63 reef fish, 17 whales & dolphins, 12 sharks & rays, 11 crabs & lobsters, 11 other, 10 seagrass & algae.

Notable Species

Protestant (Clupea harengus) - Reef Fish
Haddock (Melanogrammus aeglefinus) - Reef Fish
Cowfish (Tursiops truncatus) - Whales & Dolphins
whiting (Merlangius merlangus) - Reef Fish
dab (Limanda limanda) - Reef Fish
harbour porpoise (Phocoena phocoena) - Whales & Dolphins
grey gurnard (Eutrigla gurnardus) - Reef Fish
long rough dab (Hippoglossoides platessoides) - Reef Fish
dogfish (Scyliorhinus canicula) - Sharks & Rays
Atlantic cod (Gadus morhua) - Reef Fish
poor cod (Trisopterus minutus) - Reef Fish
sprat (Sprattus sprattus) - Reef Fish
Common minke whale (Balaenoptera acutorostrata) - Whales & Dolphins
Split (Scomber scombrus) - Reef Fish
Norway Lobster (Nephrops norvegicus) - Crabs & Lobsters
Common dragonet (Callionymus lyra) - Reef Fish
lesser argentine (Argentina sphyraena) - Reef Fish
white-beaked dolphin (Lagenorhynchus albirostris) - Whales & Dolphins
Common sea star (Asterias rubens) - Starfish
Soldier (Chelidonichthys cuculus) - Reef Fish

Recommended Packing List for Wreck of Andalina

Based on average water temperature of 8.4°C.

Drysuit - water at 8°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