Osaka to Yokohama Sea Distance Calculator

Calculate the exact nautical distance from Osaka, Japan to Yokohama, Japan. Plan your maritime journey with our professional route calculator.

Distance
373.7 nm
nautical miles
Under Sail
3.1 days
at 5 knots
Under Power
37 hours
at 10 knots
Best Time
Varies by area
Typical Sailing Season

Distance follows a sea-lane route. Sailing times are estimates at fixed cruising speeds and vary with vessel, weather, and currents.

Interactive Route Map

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Distance: 373.7 nautical miles
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This map shows the direct sea route from Osaka to Yokohama. The actual sailing path may vary based on weather conditions and navigation requirements.

Passage details

This is a markedly indirect coastal passage: the navigable route runs 80% longer than the 208 nm direct line, its heading turning from west-southwest to north-northwest.

Sea distance
373.7 nm (692 km)
Direct line
208.1 nm80% longer
Great-circle bearing
76° (east-northeast)
Sea area
Pacific Ocean
Geographic extent
2.1° × 4.9°
Crossing
Domestic · Same region
From
Osaka (Japan) 34.6937, 135.5023
To
Yokohama (Japan) 35.4437, 139.6380
Route basis
Sea-lane route
Passage timeEstimated passage time by cruising speed
Cruising speedDuration
5 kn3.1 days
8 kn47 hours
10 kn37 hours
12 kn31 hours

Distance follows a sea-lane route generated from marine traffic lanes; passage times are computed at fixed cruising speeds.

Read the methodology — How we calculate sea distances

Last reviewed 2026-06-17

About Osaka to Yokohama Route

The maritime route from Osaka to Yokohama is a overnight offshore domestic passage connecting two major commercial ports in the Pacific region. Mariners on this leg typically prepare for the western Pacific typhoon season July through October.

This route runs within the same maritime region, connecting Osaka in Japan with Yokohama in Japan.

Navigation Tips

  • •On this overnight offshore domestic crossing in the Pacific region, prepare for the western Pacific typhoon season July through October, particularly in peak season.
  • •For a overnight offshore route, plan fuel and provisioning around the Pacific region — calculate consumption with our tool.
  • •Verify port-entry requirements at both ends of this domestic route within the same maritime region before you depart.
  • •Check safety gear suited to Pacific conditions before a overnight offshore passage — life rafts, EPIRB, and current charts.
  • •Carry passports, vessel documents, and crew lists matched to this domestic route within the same maritime region.

Frequently Asked Questions

How far is it from Osaka to Yokohama by sea?

The sea distance from Osaka to Yokohama is approximately 373.7 nautical miles — a overnight offshore passage in Pacific.

How long does it take to sail from Osaka to Yokohama?

A overnight offshore within the same maritime region crossing of 373.7 nautical miles typically takes 1.6 days – 3.1 days, depending on vessel and weather.

What's the best time to sail from Osaka to Yokohama?

Conditions on this route vary by area and season, so there is no single best time that applies along its whole length. Always check current weather forecasts and sea conditions before departure.

Plan Your Perfect Maritime Journey

Use our advanced calculator above to customize your route, add waypoints, calculate fuel costs, and share your journey plan with crew members.

Plan another route with our Sea Distance CalculatorNavigation Guide