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A 17th-century Swedish Navy shipwreck has become visible in central Stockholm, emerging from the Baltic Sea after being submerged for approximately 400 years. The vessel’s wooden hull began appearing above the water’s surface in early February, offering a rare glimpse into Sweden’s maritime past.
Marine archaeologist Jim Hansson, of Stockholm’s Vrak – Museum of Wrecks, explained that the ship was intentionally sunk by the Swedish Navy around 1640. Rather than being lost in battle or through accident, the vessel was deliberately used as a foundation for a new bridge leading to the island of Kastellholmen. “This is a solution, instead of using new wood you can use the hull itself, which is oak,” Hansson told AFP.
The shipwreck is one of five similar vessels deliberately positioned to support the bridge, all dating from the late 16th and early 17th centuries. Archaeologists have not yet identified the specific ship, but are working to do so as part of a research program called “the Lost Navy,” which aims to identify and date numerous Swedish naval shipwrecks in the Baltic Sea.
Unusually low Baltic Sea levels are responsible for the ship’s reappearance. Hansson attributed the drop in water levels to a prolonged period of high pressure over the Nordic region, which has pushed water out of the Baltic Sea and into the North Sea and the Atlantic. The Baltic Sea is currently at its lowest level in about 100 years.
Whereas parts of the wreck were briefly visible in 2013, this is the most extensive exposure to date. The Baltic Sea’s unique conditions contribute to the exceptional preservation of the wooden hull. According to Hansson, the absence of shipworm – marine organisms that bore into wood – in the Baltic Sea allows the wood to last for centuries.
The discovery comes amid a series of recent underwater archaeological finds in Swedish waters. In April 2024, researchers exploring a shipwreck off the Swedish coast uncovered centuries-old artifacts, including a weapons chest and pieces of armor. Later, in July 2024, divers discovered a large quantity of champagne and wine on a Baltic Sea shipwreck, though the Swedish government subsequently declared the cargo off-limits. In October 2022, archaeologists identified the sister vessel of the Vasa, the iconic 17th-century warship that now resides in a museum in Stockholm after being salvaged.