Marine archaeologists have identified the wreck of the Danish warship Dannebroge, more than two centuries after it was destroyed during the Battle of Copenhagen in 1801 by forces under British Admiral Horatio Nelson.
The ship was found about 15 meters (49 feet) below the surface of Copenhagen Harbor, buried in heavy sediment where underwater visibility is almost nonexistent. Divers are now working in difficult conditions to recover and document the remains before the area is overtaken by a major coastal development project, reports AP-UNB.
The excavation is being led by Denmark’s Viking Ship Museum, which announced the discovery on Thursday, exactly 225 years after the battle took place. The wreck lies in an area that will eventually become part of Lynetteholm, a huge land-reclamation and housing project planned for Copenhagen Harbor and expected to be completed by 2070.
According to Morten Johansen, head of maritime archaeology at the museum, the discovery is highly significant for Denmark’s historical identity. He said the battle holds an important place in Danish national memory. Although the event has long been described in books and paintings, he noted that the wreck offers a rare chance to understand what it was actually like aboard a warship under attack.
During the Battle of Copenhagen, British naval forces under Nelson fought and defeated the Danish fleet, which had formed a defensive line outside the harbor. The battle lasted for hours and caused heavy casualties, with thousands killed or wounded. It is regarded as one of Nelson’s major military victories. The British objective was to pressure Denmark into leaving an alliance of northern European powers that included Russia, Prussia, and Sweden.
At the heart of the fighting was the Dannebroge, the Danish flagship under the command of Commodore Olfert Fischer. Measuring about 48 meters (157 feet) in length, the vessel became a primary target for British fire. Shelling badly damaged its upper deck, and burning projectiles eventually set the ship ablaze.
Johansen described the conditions onboard such ships as horrific. He explained that when cannonballs struck wooden warships, the greatest danger often did not come from the iron shot itself, but from the splintered wood it sent flying through the air, injuring crew members much like shrapnel.
The battle is also commonly linked to the origin of the expression “to turn a blind eye.” According to tradition, Nelson, who had lost sight in one eye, ignored a superior officer’s signal and reportedly said, “I have only one eye, I have a right to be blind sometimes.”
In the end, Nelson proposed a truce, and a ceasefire was later arranged with Crown Prince Frederik of Denmark. By then, however, the Dannebroge had been fatally damaged. The burning ship drifted north before exploding, and historical accounts say the blast produced a thunderous sound heard across Copenhagen.
Excavation of the wreck has already revealed a number of artifacts, including two cannons, pieces of uniforms, insignia, shoes, bottles, and even part of a sailor’s lower jaw. Archaeologists believe the human remains may belong to one of the 19 crew members still unaccounted for from the battle.
The search for the wreck began late last year, when archaeologists started surveying an area believed to match the ship’s final recorded position. Experts say the wooden remains correspond closely with historical drawings of the vessel. In addition, dendrochronological analysis—dating timber by studying tree rings—has confirmed that the wood matches the period in which the ship was built.
The site itself remains dangerous for divers. The seabed is littered with cannonballs, and clouds of disturbed silt make navigation extremely difficult. Marie Jonsson, a diver and maritime archaeologist, said there are moments when visibility disappears entirely. In such conditions, she explained, divers must rely on touch rather than sight, effectively searching with their hands.
The Battle of Copenhagen has long occupied an important place in Danish history and culture, remembered through literature and art. Archaeologists hope that the wreck and its contents will not only shed new light on the battle itself but also reveal more personal details about the people who were on board that day.
Jonsson said the small items being recovered, such as bottles, ceramics, and fragments of basketry, help bring the crew’s lives into sharper focus. These finds, she suggested, make the past feel more human and immediate.
