Exhibits include a sailor's sword from the Laiyuan armored cruiser, excavated off the coast of Weihai, Shandong province. "The building of the Beiyang Fleet was a crucial attempt to modernize," Jiang says, adding that archaeological research can help clarify what had previously been questioned. "The use of marine magnetometers has played an important role in locating shipwrecks," Jiang says. The …