Iunderstanditnow
Maritime Intelligence Hub
The World Runs on Ships
Over 90% of global trade moves by sea — but not every ship carries the same cargo. Explore every vessel class, test your maritime knowledge, and calculate shipping costs.
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Ships Active Globally
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Billion Tonnes / Year
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Countries With Merchant Fleets
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% of World Trade by Sea
Vessel Encyclopedia
Click any card to expand full stats, capacity ratings, and real-world context.
Maritime Knowledge Quiz
Test whether you really know your supertankers from your bulk carriers.
Shipping Freight Estimator
Estimate rough transit time and freight cost range based on cargo type and route.
Estimated Transit Time
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Estimated Freight Cost Range
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Carbon Footprint (approx.)
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Cost Per Unit / Tonne
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⚠ These are educational estimates based on typical industry benchmarks. Actual rates depend on market conditions, fuel prices, port fees, and negotiations.
Vessel Comparison Matrix
How the major ship classes stack up across the metrics that matter.
| Vessel Type | Max DWT (tonnes) | Avg Speed (knots) | Crew Size | Cargo Value Rating | Global Fleet % |
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Did You Know?
Maritime facts that reshape how you see global logistics.
Strategic Insights
What different vessel types tell us about the global economy.