The Triad of Irreversibility in Shipping Why Vessels Become Capital Traps

This paper introduces the Triad of Irreversibility Framework as a novel approach to understanding investment fragility in shipping finance. The study argues that vessels become "capital traps" due to the simultaneous interaction of three structural characteristics: Longevity – investment decisions remain exposed to uncertainty for decades. Capital Intensity – large financial commitments magnify the consequences of error. Indivisibility – vessels cannot be partially liquidated or gradually exited. The paper develops a theoretical framework linking these characteristics to leverage, covenant structures, liquidity constraints, and systemic fragility. It introduces the concept of the Liquidity Trap, explains the non-linear relationship between leverage and downside risk, and proposes a diagnostic model for evaluating strategic flexibility in shipping investments. The framework contributes to the literature on shipping finance, investment under uncertainty, strategic flexibility, and systemic risk by providing an integrated explanation of why shipping decisions often become economically irreversible. This work forms part of the broader research programme on irreversibility, strategic optionality, and fragility in capital-intensive systems. Author: George Emm. AntaloudakisORCID: 0009-0003-4176-8614