A submarine cargo vessel having a displacement of 20,000 m³ requires a power of about 37,000 kW for a speed of 30 knots.
Inkwili yenqanawa yemithwalo enokushenxiswa kwamashumi amabini amawaka eemitha zezikwere ifuna amandla amalunga namashumi amathathu anesixhenxe amawaka eekilowadzi kwisantya samashumi amathathu omlinganiselo wesantya senqanawa.