4 ms·Or relative to time (litres or kilograms per hour).by ptaipale 7y agoOr relative to time (litres or kilograms per hour).bawana 7y agoprob a journalistic typo.Retric 7y agoTime on it’s own is not enough as the faster the boat goes the more fuel it consumes per hour. That said, at each specific speed you get a rate as x gallons per hour.