Wakamatsu/Kitakyushu to Ulsan — sea route & marine weather
The sea route from Wakamatsu/Kitakyushu (JPWAM) to Ulsan (KRUSN) is about 116 nm — about 12 hours at 10 kn. Along the route today (Aug 3): NE wind 10–14 kn, waves 0.9–1.0 m. The baseline track is drawn on the chart; Calculate replans it for your vessel and live weather.
Passage facts| Sea-route distance | 116 nm |
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| Passage time at 10 kn | about 12 hours |
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| Great-circle distance | 117 nm |
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| Wakamatsu/Kitakyushu | 33°53.0′N 130°49.0′E |
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| Ulsan | 35°27.0′N 129°24.0′E |
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| Reference vessel | 4.5 m draft, 10 kn cruise |
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10-day marine forecast — along the route
| Date | Wind | Gusts | Waves |
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| NE 10–14 kn | 18 kn | 0.9–1.0 m |
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| NE 5–12 kn | 16 kn | 0.7–0.8 m |
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| NE 3–15 kn | 21 kn | 0.8–1.1 m |
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| NE 6–17 kn | 22 kn | 0.9–1.0 m |
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| E 10–14 kn | 17 kn | 0.8–0.9 m |
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| ENE 10–14 kn | 17 kn | 0.7–0.8 m |
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| ENE 7–16 kn | 21 kn | 1.2–1.8 m |
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| ENE 19–19 kn | 30 kn | 2.3–2.3 m |
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| NE 14–14 kn | 18 kn | 1.4–1.4 m |
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| E 14–14 kn | 18 kn | 1.2–1.2 m |
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Forecast from the ECMWF IFS model run , waves from ECMWF WAM. Updated with each model cycle; the live chart below recalculates for your departure time and vessel.
Frequently asked
How far is it from Wakamatsu/Kitakyushu to Ulsan by sea?
The water route is 116 nm (214 km), computed on WXMarine's maritime routing network. The same distance applies on the return passage from Ulsan to Wakamatsu/Kitakyushu.
How long does the passage from Wakamatsu/Kitakyushu to Ulsan take?
about 12 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.
What is the weather between Wakamatsu/Kitakyushu and Ulsan today?
Along the route today, per the ECMWF IFS run 2026-08-03 12z: NE wind 10–14 kn, waves 0.9–1.0 m. The day-by-day table on this page covers the next 10 days.