Abstract: The reliability of vessel schedules stands as a fundamental factor which determines the success and trustworthiness of worldwide maritime shipping operations. The growth of international commerce has made it essential to provide shipping services which deliver goods promptly while maintaining their predictability and effectiveness. The reliability of vessel schedules gets compromised by port congestion together with weather conditions and mechanical breakdowns as well as regulatory processes and geopolitical risk factors which affect the operations of shipping entities. A detailed examination is conducted in this paper to develop a complete set of risk management methods which address the problem of unreliable vessel schedules. The core foundation of this approach includes implementing modern digital solutions like real-time tracking together with Automatic Identification Systems (AIS) and Internet of Things (IoT) sensors and predictive analytics. The tools used in this framework enable better voyage planning through proactive route optimization and the early detection of possible delays. The implementation of predictive and preventive maintenance procedures stands as a key approach to minimize unexpected mechanical faults together with the use of Just-In-Time (JIT) port arrival methods and port call optimization that lead to shortened idle periods and increased turnaround time efficiency. The foundation of operational consistency relies on flexible network and fleet design along with crew training practices and standard operating procedures. Supply chain partners should engage collaboratively with ports and terminal operators to ensure smooth coordination and information sharing. The use of key performance indicators (KPIs) such as on-time arrival rates together with delay root cause analysis helps organizations implement continuous improvement strategies.

Key words: Predictive maintenance, Voyage optimization, Port call efficiency, Risk mitigation

| DOI: 10.17148/IARJSET.2025.125205