Yokohama to Kawasaki Ko Sea Distance Calculator

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

Distance
20.2 nm
nautical miles
Under Sail
4 hours
at 5 knots
Under Power
2 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: 20.2 nautical miles
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This map shows the direct sea route from Yokohama to Kawasaki Ko. 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 183% longer than the 7 nm direct line, its heading turning from south-southeast to west. It spans two maritime regions.

Sea distance
20.2 nm (37.4 km)
Direct line
7.1 nm183% longer
Great-circle bearing
62° (east-northeast)
Geographic extent
0.1° × 0.2°
Crossing
Domestic · Cross-region
From
Yokohama (Japan) 35.4437, 139.6380
To
Kawasaki Ko (Japan) 35.5000, 139.7667
Route basis
Sea-lane route
Passage timeEstimated passage time by cruising speed
Cruising speedDuration
5 kn4 hours
8 kn3 hours
10 kn2 hours
12 kn2 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 Yokohama to Kawasaki Ko Route

The maritime route from Yokohama to Kawasaki Ko is a short coastal 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 spanning two distinct maritime regions, connecting Yokohama in Japan with Kawasaki Ko in Japan.

Navigation Tips

  • •On this short coastal domestic crossing in the Pacific region, prepare for the western Pacific typhoon season July through October, particularly in peak season.
  • •For a short coastal 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 spanning two distinct maritime regions before you depart.
  • •Check safety gear suited to Pacific conditions before a short coastal passage — life rafts, EPIRB, and current charts.
  • •Carry passports, vessel documents, and crew lists matched to this domestic route spanning two distinct maritime regions.

Frequently Asked Questions

How far is it from Yokohama to Kawasaki Ko by sea?

The sea distance from Yokohama to Kawasaki Ko is approximately 20.2 nautical miles — a short coastal passage in Pacific.

How long does it take to sail from Yokohama to Kawasaki Ko?

A short coastal spanning two distinct maritime regions crossing of 20.2 nautical miles typically takes 2 hours – 4 hours, depending on vessel and weather.

What's the best time to sail from Yokohama to Kawasaki Ko?

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