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This systematic review critically examines the intersection of digital transformation and circular economy (CE) principles within the built environment. While digitalisation has been shown to enhance efficiency, safety, and sustainability in construction, its role in fostering circularity is less established. This study analyzes literature from 2010 to 2022, focusing on how digital technologies such as open-BIM, digital twins, material passports, blockchain, RFID, and gamification can integrate into and enhance the circular building lifecycle. The findings reveal that while digital tools are pivotal in design and construction phases, their application to existing structures is less straightforward, with challenges including the absence of digital twins for demolished structures, the high costs of retrofit digitalisation, and the predominant focus on environmental benefits over practical implementation. The review also highlights the need for a unified digital transformation strategy and greater cross-industry collaboration. Future research directions are proposed, including the development of localized material banks, the application of RFID in circularity, the scope of Design for Disassembly (DfD) tools, digital inventory of existing buildings, the circularity of Life Cycle Assessment (LCA) databases, and policy implications for promoting circular construction practices.

Second World War was one of the most devastating experiences that World as a whole had to endure. The war left so many issues unhandled, one such issue is the theme of this thesis, and that is to analyze legal regime that is governing sunken warships. Status of warship still in service is protected by international law and national law of flag State, stipulating that warships are entitled on sovereign immunity. The question rises whether or not such sovereign immunity status follows warship wreck? Contemporary international law regulates very little considering ‘sovereign wrecks’, but customary international law, municipal court decisions and State practices are addressing issue quite profoundly, stating that even the warship is no longer in service it is still entitled on sovereign immunity status. HMAS Perth is Australian owned warship whose wreck current location is within Indonesian Territorial Sea. Recent reports show that commercial salvaging has been done, provoking outrage amongst surviving HMAS Perth’s naval personnel and Australian historians. In order to acquire clear stand point on issue of Sovereign Wrecks legal status, especially of HMAS Perth’s wreck, an in-depth analysis of legal material is necessary. Keywords: Territorial Waters, Warship, Warship Wreck, Salvage