MARIANNE - Bornholm
Diving the Marianne is always a fascinating trip back in time, even if the cold water means you’re layered up. This steamship went down in 1946, off Bornholm, and she sits upright at a very manageable 18 metres. We love how intact she is, especially for a wreck of this age. You can clearly make out the bow, the stern, and even the superstructure, making for some truly evocative dives. Inside, where the light struggles to reach, you’ll find plenty of small cod and blennies sheltering in the holds. Visibility, when it's good, lets you appreciate her full length, roughly 72 metres of history. We’d suggest going on a calm day; the Baltic can kick up a fuss and strong currents sometimes sweep across the deck. Our favourite part is navigating the corridors that are still surprisingly open, imagining the crew’s last moments. It’s a site that suits anyone comfortable with cold water and wreck penetration, offering a tangible link to maritime history.
- Location
- Bornholm, Denmark, Mediterranean & Europe
- Coordinates
- 55.328640, 12.537861
- Type
- wreck
- Maximum Depth
- 18m
Marine Protected Area: Stevns Rev
Best Time to Dive in Bornholm
The warmest water temperatures in Bornholm occur in January, averaging 3.3°C. The coolest conditions are in December at 3.3°C.
Monthly Water Temperatures
- January: 3.3°C (air: 3.1°C)
- February: 3.3°C (air: 3.2°C)
- March: 3.3°C (air: 3.9°C)
- April: 3.3°C (air: 6.0°C)
- May: 3.3°C (air: 10.9°C)
- June: 3.3°C (air: 16.1°C)
- July: 3.3°C (air: 17.4°C)
- August: 3.3°C (air: 18.0°C)
- September: 3.3°C (air: 15.7°C)
- October: 3.3°C (air: 11.5°C)
- November: 3.3°C (air: 7.1°C)
- December: 3.3°C (air: 3.5°C)
Nearby Dive Sites in Bornholm
- 422 - 20m (wreck)
- AAR - 11m (wreck)
- Abille - 5-15m (shore)
- ACAPULCO 5 - 3m (wreck)
- Achterdiek See (reef)
- ADA - 42m (wreck)
- Adlergrund (reef)
- AEGEUS - 55m (wreck)
- AINAN - 7m (wreck)
- ALBERT - 4m (wreck)
- Alexsi Tauchschule
- ALIDA (OR ELIDA) - 18m (wreck)
- ALLEN - 16m (wreck)
- Allinge
- Alter Kahn
Nearest Dive Centres to MARIANNE
Marine Life in Bornholm
Home to 67 recorded species including 43 reef fish, 7 clams & mussels, 5 sea snails & nudibranchs, 4 crabs & lobsters, 2 starfish, 2 other.
Notable Species
- Protestant (Clupea harengus) - Reef Fish
- Atlantic cod (Gadus morhua) - Reef Fish
- Fluke (Platichthys flesus) - Reef Fish
- whiting (Merlangius merlangus) - Reef Fish
- sprat (Sprattus sprattus) - Reef Fish
- dab (Limanda limanda) - Reef Fish
- Blue mussel (Mytilus edulis) - Clams & Mussels
- Pollock (Trachurus trachurus) - Reef Fish
- bull rout (Myoxocephalus scorpius) - Reef Fish
- Ocean quahog (Arctica islandica) - Clams & Mussels
- eel (Anguilla anguilla) - Reef Fish
- four-bearded rockling (Enchelyopus cimbrius) - Reef Fish
- New Zealand Mudsnail (Potamopyrgus antipodarum) - Sea Snails & Nudibranchs
- anchovy (Engraulis encrasicolus) - Reef Fish
- Common sea star (Asterias rubens) - Starfish
- lumpsucker (Cyclopterus lumpus) - Reef Fish
- saithe (Pollachius virens) - Reef Fish
- Split (Scomber scombrus) - Reef Fish
- Common cockle (Cerastoderma edule) - Clams & Mussels
- Haddock (Melanogrammus aeglefinus) - Reef Fish
Recommended Packing List for MARIANNE
Based on average water temperature of 3.3°C.
- Drysuit - water at 3°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