Challenges in Rescue Excavation and Long-Term Conservation: The Case of the Oranjemund (Bom Jesus) Shipwreck, Namibia

Abstract The discovery of the Oranjemund Shipwreck ( Bom Jesus ) in 2008 on the Namibian coast represents one of sub-Saharan Africa’s most significant maritime archaeological finds. This early sixteenth-century Portuguese merchantman yielded a remarkably diverse cargo, including copper ingots, ivory tusks, gold coins, and various artifacts. However, the rescue excavation and subsequent conservation efforts revealed numerous challenges that threaten the long-term preservation of this underwater cultural heritage. This study critically examines the vulnerabilities affecting rescue excavations and post-excavation conservation through qualitative analysis of interviews with key personnel involved in the project, document analysis, and photographic evidence. Findings reveal critical challenges across three phases: excavation (environmental conditions, technical failures, leadership conflicts, ad hoc conservation expertise); post-excavation curation (inadequate facilities, severe understaffing, accessibility issues); and long-term conservation (absence of permanent conservators, resource limitations, progressive deterioration of artifacts). Photographic evidence demonstrates that some artifacts remain in initial desalination phases more than a decade post-excavation, while copper ingots show progressive corrosion threatening epigraphic evidence, as does ivory. The study proposes recommendations, including establishing national protocols for rescue excavations, developing expertise databases, constructing appropriate conservation facilities, establishing permanent conservator positions, and implementing sustainable financing mechanisms. These findings contribute to maritime archaeological practice in resource-constrained contexts and underscore the need for sustained institutional commitment to underwater cultural heritage preservation.