Maritime Routing Engine
Challenge
Sea-route libraries were either commercial, unmaintained, or quietly wrong around the places that matter most — canals and chokepoints. Logistics teams kept rebuilding the same flawed shortest-path over the same bad graph.
Approach
Open-source it properly. searoute-ts ships the 2025 Eurostat maritime network, canal and strait restrictions (Suez, Panama, Bab-el-Mandeb), vessel-draft gating, K-shortest alternatives, multi-leg waypoints, and ETA from speed — behind a stable, MIT-licensed npm API.
Result
Now downloaded roughly 13,000 times a month and actively maintained. It is the open-source backbone of everything else we do in logistics.