JAN HEWELIUSZ - Bornholm

The Jan Heweliusz wreck off Bornholm is a serious piece of history. We’ve been down to her a few times, and the sheer scale of the capsized ferry is always a bit humbling. You drop onto the starboard side, which is now the uppermost, lying at 24 metres. It’s dark down there, even on a sunny day, with the water often feeling thick with suspended particles, giving it that classic Baltic green hue. The Heweliusz went down in a brutal storm in ‘93, carrying trains and lorries, and that chaos is still evident. We love nosing around the exposed parts – the railings, the sheer bulk of the hull, and the huge props at the stern. Look for the massive anchor chain still spilling out of the hawsepipe. It’s an eerie experience, imagining the force of the waves that flipped her. Visibility can be tricky, so we always suggest a good primary light and a backup. It’s a site for experienced wreck divers who appreciate a sombre, dramatic dive over a vibrant coral garden. No bright colours here, just the stark beauty of a ship reclaimed by the sea.

Location
Bornholm, Denmark, Mediterranean & Europe
Coordinates
54.607820, 14.219067
Type
wreck
Maximum Depth
24m

Marine Protected Area: K - Strict

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

Nearest Dive Centres to JAN HEWELIUSZ

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

Recommended Packing List for JAN HEWELIUSZ

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

Frequently Asked Questions

What is the maximum depth for diving the Jan Heweliusz wreck?
The maximum depth for diving the Jan Heweliusz wreck is 24 meters. This makes it an accessible wreck dive for many certified divers with appropriate training.
What marine life and wreck features can divers expect to see when exploring the Jan Heweliusz dive site?
Divers exploring the Jan Heweliusz wreck can expect to see the remains of a 125.6m x 17.1m roll on-roll off vessel that capsized and sank in 1993. Key features include the general structure of the ship, which took on a severe list and later capsized, and evidence of its stern gate which was previously damaged. While specific marine life is not detailed in the provided data, wrecks often become artificial reefs attracting various species over time; you can learn more about common marine life in the region at our wildlife database.
How challenging is the Jan Heweliusz wreck dive, and is it considered suitable for intermediate divers?
The Jan Heweliusz wreck dive is classified as intermediate difficulty, making it suitable for divers with appropriate experience. However, it is important to note that the wreck is also classified as a Dangerous wreck, which implies potential hazards that intermediate divers should be prepared for. Always dive within your training and comfort limits.
What is the best time of year to dive the Jan Heweliusz wreck for optimal weather and water conditions?
The provided data does not specify the best time of year to dive the Jan Heweliusz wreck for optimal weather and water conditions. For general guidance on seasonal diving conditions in Denmark, we recommend consulting our when to dive section.
What specific diving certifications are recommended or required for diving the Jan Heweliusz wreck, particularly for wreck penetration?
Given the Jan Heweliusz is an intermediate difficulty and classified as a Dangerous wreck, a minimum of an Advanced Open Water certification or equivalent is generally recommended. For any wreck penetration, specialized training such as a Wreck Diver certification is absolutely essential due to the inherent risks involved. Always ensure you have the appropriate equipment and training for the planned dive.
What are the typical currents and visibility conditions divers can expect at the Jan Heweliusz wreck site?
The provided data does not include specific information regarding typical currents or visibility conditions divers can expect at the Jan Heweliusz wreck site. Divers should always check local dive reports and conditions immediately prior to their dive for the most up-to-date information.