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Fritekst søgning :

Stikord Beskrivelse
bugserhestekraft
(-kraften, -kræfter): Den maskinkraft, der anvendes til træk eller slæb af andet fartøj. Pullerttræk kan omtrent sidestilles hermed. Se engelsk sætning.
towing power.
To make sure that the expression of bollard pull is based on a uniform set of criteria, The DNV ... has formulated a test that will give the best possible indication of a tug's true towing power. This test stipulates that a continuous bollard pull be maintained for at least 10 to 15 minutes in order to arrive at an indication of a tug's true pulling power.
[Specifications in Appendix II:]
Engines shall be run at the manufacturer's recommended maximum continuous output.
The propellers fitted shall be the proppellers used in normal operations.
The length of the tow wire shall not be less than 300 m, measured between the stern of the vessel and the shoreline.
The water depth at the test location shall not be less than 20 m within a radius of 100 m of the vessel.
The vessel shall be able to maintain a fixed course for not less than five minutes.
.

Der er i alt 18 punkter, der skal være opfyldt under testen, før certifikat kan udstedes.
[SKT81 p.430, TOW p.124]
Et omsætningstal mellem bremsehestekraft og pullerttræk er givet i [PRIMERp.223] som 22,5 to 38 pounds per brake horsepower.  Kilder