Harbour tugboat
A harbour tugboat is a powerful, manoeuvrable vessel designed to assist larger ships with docking and navigation in confined waters.
Also known as: harbour tug
How big is it?
30 m long
Also 98.43 ft
Defined representative length · defined specimen
Typical recorded range: 20 m to 40 m.
A little perspective
About the same scale as Giant kelp plant.
Giant kelp plant: Giant kelp is a large brown alga that grows from the seafloor and can form dense underwater forests.
Measurements, assumptions & sources +
Harbour tugboat
A defined 30 m harbour tug with 500 tonne displacement and 6 m/s operating speed. Tug designs vary greatly; bollard pull is a separate force measurement.
Defined examples — our methodology
The marked defined representative length is calibrated. Unmeasured illustration details are representative.
Giant kelp plant
A representative mature giant kelp (Macrocystis pyrifera) thallus 30 m from holdfast to longest blade tip. Flexible fronds change shape with current, and a real holdfast anchors to rock rather than forming roots.
NOAA Ocean Service — Kelp forests
The marked representative full thallus length is calibrated. Unmeasured illustration details are representative.
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Why this measurement?
Why we use 30 m
For comparison, this page uses defined representative length. This is labelled defined specimen: an explicit comparison model rather than a claim that every example has the same value. The recorded range is 20 m to 40 m.
A defined 30 m harbour tug with 500 tonne displacement and 6 m/s operating speed. Tug designs vary greatly; bollard pull is a separate force measurement.
The marked horizontal span follows the named feature; transparent margins and unmeasured details do not alter it. How calibrated comparisons work →
Recorded properties
Harbour tugboat dimensions and measurements
| Property | Selected value | Recorded range | Basis |
|---|---|---|---|
| 30 m | 20 m to 40 m | defined specimen | |
| 500 t | 200 t to 1,000 t | defined specimen | |
| 6 m/s | 4.2 m/s to 8.4 m/s | defined specimen |
Around this scale
Go smaller. Go bigger.
These links use compatible length records, ordered around the selected value.
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Want to check the number?
The source records and measurement method remain available for inspection.
There’s always another scale
Follow your curiosity.
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