The Seachampion, meanwhile, will test a US guarantee that humanitarian shipments, including food, medical supplies and other goods essential for the survival of civilian populations, would be permitted, subject to inspection. It left Iran’s Bandar Imam Khomeini, a major grains import hub, on Monday, data show, within a grace period that the US offered before the blockade came into effect. It’s indicating Shinas, an Omani port, as a destination.