Net Present Value (NPV) is proposed as an indicator for decision-making processes entailed in the development of comprehensive maintenance strategies for mooring facilities of a port with consideration of variations in states of facility deterioration. In order to show the validity of the NPV as an effective indicator for a comprehensive maintenance strategy, the NPVs are compared through several case studies to the optimization results via consideration of a commonly used a life-cycle costs (LCC) indicator. In particular, the influence of uncertainty of deterioration progress is studied. The results show that NPV is an effective indicator for the comprehensive maintenance strategy of ports. Additionally, the NPV-optimized maintenance scenario, which indicated that preventative maintenance is the optimum strategy for port facilities, was found to be effective in incorporating uncertain factors, such as the state of deterioration.

建议将净现值（NPV）用作决策过程的指标，该决策过程需要针对港口的停泊设施制定综合维护策略，同时考虑设施恶化状态的变化。为了显示NPV作为全面维护策略的有效指标的有效性，通过考虑常用的生命周期成本（LCC）指标，通过一些案例研究将NPV与优化结果进行了比较。特别地，研究了劣化进展的不确定性的影响。结果表明，净现值是港口全面维护策略的有效指标。此外，NPV优化的维护方案表明预防性维护是港口设施的最佳策略，