UNITED NATIONS: The UN secretary-general says COVID-19 travel restrictions have left hundreds of thousands of the world’s 2 million seafarers stranded at sea for months, and is calling on countries to designate them and other marine personnel as key workers. Antonio Guterres also called on nations to ensure that crews can leave vessels and be replaced safely, according to a statement Friday from UN spokesman Stephane Dujarric. The UN chief said the maximum time for seafarers to spend at sea under international conventions is being ignored, with some marooned on vessels for 15 months. Guterres said U.N. agencies, including the International Labor Organization and the International Maritime Organization, have worked with the International Chamber of Shipping and the International Transport Workers Federation to develop protocols for crew changeovers, “taking full account of public health concerns.”