Broadly speaking, however, they are between 2,000 and 20,000 tons gross, with speeds of between 14 and 20 knots, and between 200 and 600 ft in length.
Ngokokuthetha gabalala, nokuba kutheni, phakathi kwe2,000 kunye ne20,000 yobukhulu bedazini engamashumi amabini, ngokwesantya esiphakathi kwe14 kunye ne20 yamaqhina, kwaye naphakathi kwe200 kunye ne600 yeenyawo ubude.