20 tonnes
20 tMass · definition
The quantity is exact as entered. Comparisons use the clearly stated specimen, model or nominal measurement.
Mass
Just how heavy is 20 tonnes?
Heavyweights
20 t
20 tonnes
The quantity is exact as entered.
20,000 kgMass in kilograms
0 kg
Canal narrowboat
A canal narrowboat is a long, slender vessel designed for navigating the narrow canals of the United Kingdom.
18,000 kgDefined displacement mass in kilograms
0 kg
Bar length measures mass, not physical size. Both bars start at zero kilograms (kg). Pictures identify the objects only.
A little perspective
20 tonnes is about 1.11 times the displacement mass of a canal narrowboat.
Measurements, assumptions & sources +
20 tonnes
Mass: 20 t; definition.
The quantity is exact as entered. Comparisons use the clearly stated specimen, model or nominal measurement.
Canal narrowboat
Defined displacement mass: 18 t; defined specimen; range 14 t–22 t.
A defined 17.7 m cruising narrowboat displacing 18 tonnes and travelling at 1.8 m/s. Bow-to-stern hull length excludes removable fenders; fit-out, loading and waterway dimensions vary.
Canal & River Trust — Boats and boating
The marked defined displacement mass is calibrated. Unmeasured illustration details are representative.
Measurement details
Why these numbers?
Compare 20 tonnes with the displacement mass of a canal narrowboat. The notes below explain how each value was chosen.
Canal narrowboat
18 tDefined displacement mass · defined specimen · range 14 t–22 t
A defined 17.7 m cruising narrowboat displacing 18 tonnes and travelling at 1.8 m/s. Bow-to-stern hull length excludes removable fenders; fit-out, loading and waterway dimensions vary.
- Comparing
- Mass ↔ Defined displacement mass
- Relative size
- 20 tonnes is about 1.11 times the displacement mass of a canal narrowboat. 20 tonnes is approximately 11.1% greater than the displacement mass of a canal narrowboat.
How to read the visual
The diagram uses the recorded measurements. Details outside the marked spans do not set the scale.
- We use 18 t for the displacement mass of a canal narrowboat; the recorded range is 14 t–22 t.
- The displacement mass of a canal narrowboat: This is an illustrative comparison value, not a claim that every example is the same.
- The recorded ranges overlap, so the ordering can vary even though the central values differ.
Mass is distinct from weight: an object’s mass stays the same as gravity changes.
20,000 kgkilograms
44,092 lbpounds
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