Onomichi-Itozaki to Tokyo — sea route & marine weather
The sea route from Onomichi-Itozaki (JPONX) to Tokyo (JPTYO) is about 982 nm — about 4 days 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 | 982 nm |
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| Passage time at 10 kn | about 4 days |
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| Great-circle distance | 334 nm |
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| Onomichi-Itozaki | 34°23.0′N 133°10.0′E |
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| Tokyo | 35°41.0′N 139°45.0′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 Onomichi-Itozaki to Tokyo by sea?
The water route is 982 nm (1,819 km), computed on WXMarine's maritime routing network. The same distance applies on the return passage from Tokyo to Onomichi-Itozaki.
How long does the passage from Onomichi-Itozaki to Tokyo take?
about 4 days 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.