With gas-turbine machinery, for example, the fuel required for a 20 hour voyage would amount to between one-quarter and one-third of the total weight of the vehicle.
Umzekelo, ngomatshini wombhobho womoya izibaso ezifunekayo ngeyure ezimashumi mabini ohambo ngenqanawa, imali yazo izakuba phakathi kwekota enye ne 1/3 bubonke ubunzima besithuthi.