Construction work on the Varberg Tunnel in Sweden, part of a modern rail infrastructure project, has uncovered six shipwrecks dating from the medieval era to the 17th century. The shipwrecks, discovered in the historic city center, reveal fragments of a vibrant port that once played an important role in regional trade and defense.

As reported by Popular Mechanics, the remains offer a rare glimpse into centuries-old shipbuilding techniques and maritime activity, though much about the ships' histories remains hidden beneath layers of sediment. This unexpected discovery highlights the ongoing connection between modern development and historic preservation.

The six shipwrecks were found during excavations for a modern railway tunnel project. Archaeological experts from Arkeologina identified four shipwrecks as originating from the Middle Ages or Late Middle Ages, one from the 17th century and one that remains undated.

These ships represent remnants of maritime activity that shaped the coastal development of the region.

Remains 2, 5 and 6 were discovered in the central part of Varberg, corresponding to the original coastline and the historic harbor defense area.

Due to time constraints in the construction of the tunnel, wrecks 5 and 6 had to be removed quickly, potentially leaving some parts of the ships buried underground.

The best-preserved ship consists of the remains of an oak sailing ship built in the 1530s using wood from Western Sweden.

Built in the clinker construction style—where the edges of the wood overlap—it preserves two sections of the hull from the starboard side along with scattered timbers.

A distinctive feature of this ship is its berghult, or rock beam, a protective strip on the outside of the ship's hull. This component serves as a reinforced support to protect the hull during anchorage and can support the ship's superstructure. The ship was fully or partially decked.

According to Arkeologerna,

Berghult is usually associated with ships built with carvel stones, but it is also found on ships built with clinker. There are also traces of fire in berghult, which is interesting.

This raises questions about whether the ship was damaged or deliberately burned before sinking.

Traces of fire on Berghult suggest that Wreck 2 may have been deliberately burned before sinking, a rare and intriguing detail in maritime archaeology.

Shipwreck 5, dating from the 17th century, bears similarities to Shipwreck 2, including its native oak wood and clinker plank design. Experts believe that these two ships likely sailed near the medieval towns of Varberg and Ny Varberg, extending their voyages across much of the Baltic Sea.

Shipwreck 6 stands out as the only caravel-style ship among the six, built with planks laid end-to-end and fastened to the frame for a smooth finish. This oak ship is the only shipwreck with a preserved grooved keel, indicating Dutch shipbuilding traditions. However, its wood has not yet been accurately dated.

Remains 3 and 4, both dated to the 14th century, are flat-bottomed vessels commonly used in medieval trade.

These ships offer opportunities for further research to uncover details about maritime life and trade networks in the Middle Ages.

Elisabet Schager, project manager at Arkeologina, emphasized the broader significance of the discovery:

In recent years, it has become increasingly common to find preserved shipwrecks on the West Bank. This is due to large infrastructure projects often taking place in areas that, during the Middle Ages and early modern period, were underwater or part of harbor areas.

The Varberg Tunnel construction project, a modern railway infrastructure initiative, has unexpectedly brought to light an important maritime heritage from past centuries, offering valuable insights into shipbuilding techniques, historic trade routes and coastal life.

(AA/BalkanWeb)