WILHELM - North Sea Coast

The Wilhelm isn't just another wreck; it’s a portal to a specific moment in naval history, sitting in a relatively shallow 13 metres. We love how accessible it is, making it a proper afternoon adventure rather than a full-day expedition. You're diving on a piece of a German U-boat, specifically the U-20, which famously sank the RMS Lusitania. This U-boat was scuttled by its own crew in 1916, and what remains is a compelling, if fragmented, structure on the seabed. The main draw here is exploring the scattered remains of the conning tower and various hull sections. We’ve found the bow section to be the most dramatic, often silhouetted against the ambient light filtering through the North Sea's green embrace. Look closely and you’ll find flatfish tucked into the sandy patches, and often schools of cod and pollock patrolling the deeper sections of the wreck. It's a great spot for wreck enthusiasts who appreciate historical context over intact structures, and the shallow depth means generous bottom time for exploring the fragments. Just watch for the currents; they can pick up, so we’d suggest timing your dive for slack tide.

Location: North Sea Coast, Denmark, Mediterranean & Europe
Coordinates: 55.833380, 10.863376
Type: wreck
Maximum Depth: 13m

Marine Protected Area: Hatter Barn

Best Time to Dive in North Sea Coast

The warmest water temperatures in North Sea Coast occur in January, averaging 4.6°C. The coolest conditions are in December at 4.6°C.

Monthly Water Temperatures

January: 4.6°C (air: 3.3°C)
February: 4.6°C (air: 3.6°C)
March: 4.6°C (air: 4.1°C)
April: 4.6°C (air: 6.7°C)
May: 4.6°C (air: 11.2°C)
June: 4.6°C (air: 15.4°C)
July: 4.6°C (air: 16.2°C)
August: 4.6°C (air: 16.7°C)
September: 4.6°C (air: 14.7°C)
October: 4.6°C (air: 10.8°C)
November: 4.6°C (air: 6.9°C)
December: 4.6°C (air: 3.3°C)

Nearest Dive Centres to WILHELM

Marine Life in North Sea Coast

Home to 105 recorded species including 55 reef fish, 9 crabs & lobsters, 8 other, 7 clams & mussels, 6 sea snails & nudibranchs, 5 seagrass & algae.

Notable Species

dab (Limanda limanda) - Reef Fish
Protestant (Clupea harengus) - Reef Fish
Atlantic cod (Gadus morhua) - Reef Fish
whiting (Merlangius merlangus) - Reef Fish
Ocean quahog (Arctica islandica) - Clams & Mussels
Fluke (Platichthys flesus) - Reef Fish
Blue mussel (Mytilus edulis) - Clams & Mussels
sprat (Sprattus sprattus) - Reef Fish
Common cockle (Cerastoderma edule) - Clams & Mussels
bull rout (Myoxocephalus scorpius) - Reef Fish
Sea potato (Echinocardium cordatum) - Sea Urchins
Sand mason (Lanice conchilega) - Worms
eel (Anguilla anguilla) - Reef Fish
Edible periwinkle (Littorina littorea) - Sea Snails & Nudibranchs
Common sea star (Asterias rubens) - Starfish
long rough dab (Hippoglossoides platessoides) - Reef Fish
Pollock (Trachurus trachurus) - Reef Fish
Common shore crab (Carcinus maenas) - Crabs & Lobsters
New Zealand Mudsnail (Potamopyrgus antipodarum) - Sea Snails & Nudibranchs
Common dragonet (Callionymus lyra) - Reef Fish

Recommended Packing List for WILHELM

Based on average water temperature of 4.6°C.

Drysuit - water at 5°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