Question 1

What is a league per hour?

Accepted Answer

A league is about 3 miles, so 1 league/hour ≈ 5 kph. Historical measure - "20 leagues" in Jules Verne meant distance, not depth.

Question 2

How fast was a sailing ship in leagues?

Accepted Answer

About 2-4 leagues per hour (10-20 kph). A fast clipper might make 5+ leagues/hour under good conditions.

Question 3

What's the fastest speed possible?

Accepted Answer

The speed of light (299,792,458 m/s or about 670 million mph) is the universal speed limit. Nothing with mass can reach it.

Question 4

Why do pilots and sailors use knots?

Accepted Answer

One knot = one nautical mile per hour. Nautical miles relate directly to Earth's latitude (1 nm = 1 minute of latitude), simplifying navigation.

Leagues Per Hour to Kilometers per Hour Converter

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