Osaka to Busan — sea route & marine weather
The sea route from Osaka (JPOSA) to Busan (KRPUS) is about 373 nm — about 37 hours at 10 kn. The baseline track is drawn on the chart; Calculate replans it for your vessel and live weather.
Passage facts| Sea-route distance | 373 nm |
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| Passage time at 10 kn | about 37 hours |
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| Great-circle distance | 317 nm |
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| Osaka | 34°39.0′N 135°26.0′E |
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| Busan | 35°6.0′N 129°2.0′E |
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| Reference vessel | 4.5 m draft, 10 kn cruise |
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Marine forecast
No forecast frames are loaded right now. The live chart below shows conditions as soon as the next model run is ingested.
Frequently asked
How far is it from Osaka to Busan by sea?
The water route is 373 nm (690 km), computed on WXMarine's maritime routing network. The same distance applies on the return passage from Busan to Osaka.
How long does the passage from Osaka to Busan take?
about 37 hours at a 10 kn cruise. Scale by your own speed: at half the speed it takes about twice as long. The planner on this page recalculates for your vessel and live weather.