Diving 1400s Baltic wreck yields surprises A 15th-century armed merchant shipwreck sunk off Maderö Island near Stockholm has drawn Swedish divers for the past 55 years, but it was only in
Iron balls draw divers to rare 1500s shipwreck “The Osmund Wreck is unique – I’ve never seen anything like it,” says diver Jim Hansson, marine archaeologist at Sweden’s Vrak, the Museum of Wrecks