The 2023 Marion Relief Voyage 057 offered the 11th opportunity to conduct multi-disciplinary, ship-based oceanographic research on board the SA Agulhas II en route to, from, and around, the sub-Antarctic Prince Edward Islands (PEIs). The ship-based research was conducted as a joint multi-institutional, multidisciplinary effort with scientists, research technicians, interns and students from the Department of Forestry, Fisheries and the Environment: Oceans & Coasts Research (DFFE-OCR), Department of Forestry, Fisheries and the Environment: Specialist Monitoring Services (DFFE-SMS), Bayworld Centre for Research and Education (BCRE), the University of Cape Town (UCT) and the University of Pretoria (UP), all collaborating to achieve a variety of research and monitoring project objectives. For the 2023 Relief voyage 19 scientists; students; technicians and interns participated on the voyage from the various institutes and universities.