Belfast to Dundee Sea Distance Calculator

Calculate the exact nautical distance from Belfast, United Kingdom to Dundee, United Kingdom. Plan your maritime journey with our professional route calculator.

Distance
538.8 nm
nautical miles
Under Sail
4.5 days
at 5 knots
Under Power
2.2 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: 538.8 nautical miles
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This map shows the direct sea route from Belfast to Dundee. 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 260% longer than the 150 nm direct line, its heading turning from northeast to west.

Sea distance
538.8 nm (997.9 km)
Direct line
149.6 nm260% longer
Great-circle bearing
41° (northeast)
Geographic extent
4.1° × 5.3°
Crossing
Domestic · Same region
From
Belfast (United Kingdom) 54.6167, -5.9000
To
Dundee (United Kingdom) 56.4667, -2.9500
Route basis
Sea-lane route
Passage timeEstimated passage time by cruising speed
Cruising speedDuration
5 kn4.5 days
8 kn2.8 days
10 kn2.2 days
12 kn45 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 Belfast to Dundee Route

Linking Belfast and Dundee, 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 Belfast (United Kingdom) and Dundee (United Kingdom), 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.

Frequently Asked Questions

How far is it from Belfast to Dundee by sea?

Approximately 538.8 nautical miles separate Belfast and Dundee by sea, making this a extended offshore leg in Northern Europe.

How long does it take to sail from Belfast to Dundee?

Expect about 2.2 days – 4.5 days for a extended offshore run of 538.8 nautical miles within the same maritime region.

What's the best time to sail from Belfast to Dundee?

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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