World's Largest Warship Visits Oslo On Wednesday 24 May, the world's largest warship, the USS "Gerald R. Ford," sailed into Oslofjord to visit Oslo. 25.05.2023 Workshops for emission-free ports and cities The City and Port of Oslo and the C40 Green Ports Forum invites to workshops 28- 29. September to explore the role of port and city in enabling decarbonization of supply chains. 10.09.2021