See Port Congestion
Before It Moves Markets
HarborSignal tracks real-time vessel traffic at 9 major global ports and automatically correlates congestion anomalies with energy futures, shipping stocks, and commodity ETFs.
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Everything a macro trader needs in one place
Real-Time AIS Vessel Tracking
Live vessel counts, anchored ratios, and congestion scores updated every 6 hours across major global ports using AIS transponder data.
Floating Storage Detection
Automatically identifies tankers sitting at anchor — a leading indicator of oversupply used by energy traders worldwide.
Chokepoint Watch
Panama Canal and Suez Canal queue counts with vessel class breakdowns. Spot disruptions before they hit shipping rates.
AI Trading Signals
Claude AI correlates port anomalies with energy futures (CL, NG, BZ), shipping stocks (ZIM, MATX, DAC), and commodity ETFs.
Congestion Charts & Heatmaps
7-day multi-port trend lines and color-coded heatmaps let you spot simultaneous surges — a classic sign of global tightening.
Energy Fundamentals
EIA crude & distillate inventory data, crack spreads, and Baltic Dry Index layered alongside port congestion for full context.
9 Ports Monitored 24/7
Covering the world's most trade-critical chokepoints, energy terminals, and container hubs.
LA / Long Beach
Container hub
Largest US container port
Shanghai / Ningbo
Container hub
World's busiest port complex
Singapore
Oil & container
Global bunkering capital
Rotterdam
Energy & mixed
Europe's largest port
Houston
Energy hub
US crude & LNG exports
Ras Tanura
Oil terminal
Saudi Aramco export terminal
Port Hedland
Bulk (iron ore)
World's largest bulk port
Santos
Mixed
Brazil's main container port
Sabine Pass
LNG terminal
US LNG export leader
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How it works
AIS data collected
Every 6 hours, HarborSignal pulls live vessel positions from AIS transponders at each monitored port and chokepoint.
Anomalies detected
The backend compares the latest snapshot to the rolling baseline. Significant changes in vessel count or congestion score trigger a signal.
Claude AI analyzes
Claude reads the anomaly alongside port-specific context (what cargo flows through, which tickers are correlated) and generates a plain-English signal.
You trade smarter
Signals are published to the dashboard with confidence scores, affected tickers, and the specific reasoning — no black box.
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Or explore the live dashboard →HarborSignal is a free, general-purpose maritime data publication. AI-generated signals are not financial advice and are not produced by a licensed investment adviser or commodity trading adviser. Past patterns do not guarantee future results. Legal & Risk Disclosures