JAN HEWELIUSZ
Protected Area
K - Strict
Why dive here
With 66+ marine species recorded in the area - including jellyfish lake - JAN HEWELIUSZ offers some of Bornholm's richest wreck diving. Water ranges 3-18°C, warmest July, August, September.
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.
Typical JAN HEWELIUSZ Dive Profile
Illustrative profile based on site depth and type. Actual dive profiles vary - always follow your dive computer and training.
Safety Notes
Depth of 24m - Advanced Open Water certification recommended.
Wreck site - avoid penetration without wreck diving certification. Watch for sharp metal and entanglement hazards.
Cold water this month (avg 14°C). Drysuit or thick wetsuit (7mm+) recommended.
Always perform a 3-minute safety stop at 5m before surfacing.
Reviews for JAN HEWELIUSZ
Conditions
Ocean conditions, forecast and tides for JAN HEWELIUSZ
JAN HEWELIUSZ Ocean Conditions
Monthly averages for JAN HEWELIUSZ, sourced from Open-Meteo marine data - nearest station: Open-Meteo marine grid (54.94, 13.85) (7km away)
October Averages
Sea Temperature
14°C
57°F · Range: 11.7–16.3°C
Air Temperature
12°C
53°F
Wind Speed
8.16 m/s
15.9 knots
Atmospheric Pressure
1013.3 hPa
Based on 4 years of monitoring data · Data sources: Open-Meteo marine data
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