London to Port Of Rouen Sea Distance Calculator

Calculate the exact nautical distance from London, United Kingdom to Port Of Rouen, France. Plan your maritime journey with our professional route calculator.

Distance
185.9 nm
nautical miles
Under Sail
37 hours
at 5 knots
Under Power
19 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

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Distance: 185.9 nautical miles
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This map shows the direct sea route from London to Port Of Rouen. 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 42% longer than the 131 nm direct line, its heading turning from east to south. It is an international crossing between two countries. It spans two maritime regions.

Sea distance
185.9 nm (344.3 km)
Direct line
130.7 nm42% longer
Great-circle bearing
160° (south-southeast)
Geographic extent
2.0° × 1.6°
Crossing
Cross-border · Cross-region
From
London (United Kingdom) 51.5000, -0.0833
To
Port Of Rouen (France) 49.4500, 1.0667
Route basis
Sea-lane route
Passage timeEstimated passage time by cruising speed
Cruising speedDuration
5 kn37 hours
8 kn23 hours
10 kn19 hours
12 kn15 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 London to Port Of Rouen Route

A medium-length coastal international sea route between London and Port Of Rouen, this passage connecting two major commercial ports in the Northern Europe region demands attention to tidal streams and seasonal ice in the higher latitudes.

The corridor spanning two distinct maritime regions joins London, United Kingdom to Port Of Rouen, France.

Navigation Tips

  • •Plan this medium-length coastal international leg in the Northern Europe region with attention to tidal streams and seasonal ice in the higher latitudes.
  • •Provisioning for this medium-length coastal passage in Northern Europe should account for regional supply networks.
  • •Allow time for entry formalities on this international leg spanning two distinct maritime regions.
  • •Adapt safety equipment to Northern Europe conditions for this medium-length coastal crossing.
  • •For a international crossing spanning two distinct maritime regions, ensure clearance papers and visas are in order before departure.

Frequently Asked Questions

How far is it from London to Port Of Rouen by sea?

This is a medium-length coastal sea passage of about 185.9 nautical miles between London and Port Of Rouen in Northern Europe.

How long does it take to sail from London to Port Of Rouen?

Average voyage time on this medium-length coastal spanning two distinct maritime regions leg of 185.9 nautical miles is 19 hours – 37 hours.

What's the best time to sail from London to Port Of Rouen?

Aim for May-September for the calmest passage in Northern Europe; off-peak periods bring tidal streams and seasonal ice in the higher latitudes.

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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