The maritime industry has long operated on a take-make-dispose logic, where a vessel's end-of-life is an afterthought rather than a design input. This study's synthesis of 53 publications from 2020 to 2026 confirms what many operators already suspect: circularity is not a single retrofit but a systemic rethinking of how ships are built, run, and eventually dismantled. The authors identify fragmented lifecycle data and weak reverse-logistics systems as primary barriers, which aligns with what we hear from ports and shipowners struggling to track materials across borders and charter parties. The proposed Maritime Circularity Maturity Model (MCMM) is a useful diagnostic, but its real value lies in forcing organizations to benchmark where they actually are, not where they claim to be.
What stands out is the emphasis on digital enablers as the connective tissue for circularity. Lifecycle databases, digital twins, blockchain traceability, and IoT systems are not abstract tech buzzwords here; they are practical tools for answering basic questions like "What is in this vessel?" and "When did we last maintain that pump?" The study's integration of these tools into a transition framework addresses a persistent gap in the sector: we have plenty of pilot projects, but little standardization. For a shipowner, this means the path forward is less about inventing new materials and more about investing in data governance and interoperability. A related piece on digital twin applications and another on blockchain in shipping illustrate how these technologies are already moving from proof-of-concept to operational reality.
Our take is measured but direct: the research is sound, but the real test is execution. The study correctly notes that regulatory inconsistency and misaligned economic incentives remain unresolved. A circular ship is only viable if the scrap value of components, the availability of spare parts, and the cost of reverse logistics are competitive with linear alternatives. The MCMM and Integrated Circular Transition Framework (ICTF) give the industry a shared vocabulary, but they do not solve the commercial equation. Readers should treat the proposed models as a starting point for internal audits, not as a compliance checklist. One concrete takeaway worth quoting: "Material and lifecycle baselining is not a one-time exercise but a continuous discipline that determines whether circularity is a cost center or a value driver."
We would tell a reader asking about this study to focus on two things. First, the digital infrastructure layer: without interoperable data standards, the blockchain and IoT tools will remain siloed experiments. Second, the organizational capability gap: circularity requires training and incentives that align procurement, operations, and decommissioning teams, which rarely happen in traditional shipping companies. The open question is whether regulators will mandate lifecycle data standards or if first movers will create market pressure. Watch for the next wave of newbuild contracts to see if design for disassembly appears as a contractual requirement, not just a conference topic. That will be the clearest signal that circularity has moved from theory to practice.