Belfast to Liverpool Sea Distance Calculator

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

Distance
146.1 nm
nautical miles
Under Sail
29 hours
at 5 knots
Under Power
15 hours
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

Loading map...

Distance: 146.1 nautical miles
🧮 Open Interactive Calculator

This map shows the direct sea route from Belfast to Liverpool. The actual sailing path may vary based on weather conditions and navigation requirements.

Passage details

This is a moderately indirect coastal passage: the navigable route runs 17% longer than the 125 nm direct line, its heading turning from northeast to north-northwest.

Sea distance
146.1 nm (270.6 km)
Direct line
125.1 nm17% longer
Great-circle bearing
124° (southeast)
Geographic extent
1.4° × 2.9°
Crossing
Domestic · Same region
From
Belfast (United Kingdom) 54.6167, -5.9000
To
Liverpool (United Kingdom) 53.4167, -3.0000
Route basis
Sea-lane route
Passage timeEstimated passage time by cruising speed
Cruising speedDuration
5 kn29 hours
8 kn18 hours
10 kn15 hours
12 kn12 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 Liverpool Route

The maritime route from Belfast to Liverpool is a day-passage domestic passage connecting two major commercial ports in the Northern Europe region. Mariners on this leg typically prepare for North Sea gales and short steep seas in winter.

This route runs within the same maritime region, connecting Belfast in United Kingdom with Liverpool in United Kingdom.

Navigation Tips

  • •On this day-passage domestic crossing in the Northern Europe region, prepare for North Sea gales and short steep seas in winter, particularly in peak season.
  • •For a day-passage route, plan fuel and provisioning around the Northern Europe 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 Northern Europe conditions before a day-passage 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 Belfast to Liverpool by sea?

The sea distance from Belfast to Liverpool is approximately 146.1 nautical miles — a day-passage passage in Northern Europe.

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

A day-passage within the same maritime region crossing of 146.1 nautical miles typically takes 15 hours – 29 hours, depending on vessel and weather.

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

The best time for this route in Northern Europe is May-September, when conditions are most favourable; expect North Sea gales and short steep seas in winter outside that window.

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