The Norwegian navy frigate "KNM Helge Ingstad" is being salvaged and towed from the place where it sank in Hjeltefjorden near Bergen, Norway, on February 28, 2019. - Returning from NATO's Trident Juncture exercises, the KNM Helge Ingstad frigate sank after crashing into the Sola TS tanker in the early hours of November 8, 2018, in a fjord near the western Norwegian town of Bergen. The collision between the Norwegian frigate and the Maltese oil tanker was mainly due to human factors, investigators said. (OLE MARTIN WOLD/AFP/Getty Images)