SONAR (Supply-chain Optimization and Network Analysis for Resilience) is an interactive maritime intelligence platform that empowers procurement and logistics analysts to identify optimal shipping routes and assess their vulnerability to real-world disruptions. Built on six years of UNCTAD maritime data (2016–2021) spanning approximately 200 country-pairs and five product categories, SONAR employs a multi-stage pipeline that integrates seven heterogeneous datasets into 25 engineered features, uses an XGBoost model with temporal cross-validation to impute missing freight rates across sparse bilateral corridors, and constructs directed weighted graphs over which Yen's K-shortest path algorithm performs simultaneous multi-criteria route optimization — balancing cost, speed, and resilience. Route resilience is quantified through a composite AHP-weighted Resilience Score that accounts for route alternatives, chokepoint exposure, bilateral shipping connectivity, and fleet availability. The platform further supports scenario simulation — including the closure of critical maritime chokepoints such as the Suez Canal and Strait of Malacca, as well as the application of regional tariff shocks — allowing analysts to evaluate how supply chains degrade and reroute under stress. All capabilities are surfaced through a three-page Streamlit dashboard featuring an interactive globe, corridor-level resilience heatmaps, and XGBoost explainability tools, making SONAR a rigorous yet accessible decision-support system for supply chain resilience planning.