Kokkola to Sillamae Sea Distance Calculator

Calculate the exact nautical distance from Kokkola, Finland to Sillamae, Estonia. Plan your maritime journey with our professional route calculator.

Distance
505.9 nm
nautical miles
Under Sail
4.2 days
at 5 knots
Under Power
2.1 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: 505.9 nautical miles
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This map shows the direct sea route from Kokkola to Sillamae. 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 70% longer than the 298 nm direct line, its heading turning from north-northwest to east-southeast. It is an international crossing between two countries.

Sea distance
505.9 nm (937 km)
Direct line
297.6 nm70% longer
Great-circle bearing
151° (south-southeast)
Geographic extent
4.6° × 7.7°
Crossing
Cross-border · Same region
From
Kokkola (Finland) 63.8500, 23.0167
To
Sillamae (Estonia) 59.4261, 27.7395
Route basis
Sea-lane route
Passage timeEstimated passage time by cruising speed
Cruising speedDuration
5 kn4.2 days
8 kn2.6 days
10 kn2.1 days
12 kn42 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 Kokkola to Sillamae Route

Linking Kokkola and Sillamae, this extended offshore cross-border crossing between two major harbours sits in the Northern Europe region — a passage shaped by persistent low cloud and reduced visibility on shoulder-season passages.

The lane links Kokkola (Finland) and Sillamae (Estonia), between neighbouring ports of the same region.

Navigation Tips

  • •A extended offshore cross-border 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 cross-border crossing between neighbouring ports of the same 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 cross-border passages between neighbouring ports of the same region; verify cruising permits in advance.

Frequently Asked Questions

How far is it from Kokkola to Sillamae by sea?

Approximately 505.9 nautical miles separate Kokkola and Sillamae by sea, making this a extended offshore leg in Northern Europe.

How long does it take to sail from Kokkola to Sillamae?

Expect about 2.1 days – 4.2 days for a extended offshore run of 505.9 nautical miles between neighbouring ports of the same region.

What's the best time to sail from Kokkola to Sillamae?

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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