Kotka to Oulu Sea Distance Calculator

Calculate the exact nautical distance from Kotka, Finland to Oulu, Finland. Plan your maritime journey with our professional route calculator.

Distance
607.7 nm
nautical miles
Under Sail
5.1 days
at 5 knots
Under Power
2.5 days
at 10 knots
Best Time
May-September
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: 607.7 nautical miles
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This map shows the direct sea route from Kotka to Oulu. 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 120% longer than the 277 nm direct line, its heading turning from south to east-southeast.

Sea distance
607.7 nm (1125.4 km)
Direct line
276.5 nm120% longer
Great-circle bearing
352° (north)
Geographic extent
5.5° × 7.1°
Crossing
Domestic · Same region
From
Kotka (Finland) 60.4667, 26.9667
To
Oulu (Finland) 65.0167, 25.4000
Route basis
Sea-lane route
Passage timeEstimated passage time by cruising speed
Cruising speedDuration
5 kn5.1 days
8 kn3.2 days
10 kn2.5 days
12 kn2.1 days

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 Kotka to Oulu Route

Linking Kotka and Oulu, this extended offshore domestic crossing connecting two major commercial ports sits in the Northern Europe region — a passage shaped by persistent low cloud and reduced visibility on shoulder-season passages.

The lane links Kotka (Finland) and Oulu (Finland), within the same maritime region.

Navigation Tips

  • •A extended offshore domestic passage in the Northern Europe region typically requires planning for persistent low cloud and reduced visibility on shoulder-season passages.
  • •A extended offshore leg in Northern Europe benefits from waypoint planning and verified fuel availability.
  • •Confirm operating hours and clearance procedures for this domestic crossing within the same maritime region, since rules vary by port.
  • •Verify that emergency equipment matches the demands of a extended offshore leg in Northern Europe.
  • •Documentation requirements differ for domestic passages within the same maritime region; verify cruising permits in advance.

Suggested Stops

On a long 607.7 nm passage from Kotka to Oulu, these ports make convenient places to break the journey, refuel, and rest.

  1. Uto (Finland) · ≈206.3 nm in — View port details
  2. Obbola (Sweden) · ≈445.3 nm in — View port details

Frequently Asked Questions

How far is it from Kotka to Oulu by sea?

Approximately 607.7 nautical miles separate Kotka and Oulu by sea, making this a extended offshore leg in Northern Europe.

How long does it take to sail from Kotka to Oulu?

Expect about 2.5 days – 5.1 days for a extended offshore run of 607.7 nautical miles within the same maritime region.

What's the best time to sail from Kotka to Oulu?

Peak sailing season here is May-September; year-round, Northern Europe routes contend with persistent low cloud and reduced visibility on shoulder-season passages.

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.

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