Ma pulleys omwe ali ndi zisindikizo zambiri, zomwe zimatsimikizira kuti kugwidwa sikudzalowa m'madzi ndi matope m'madzi a m'nyanja.Pambuyo pa kafukufuku wazaka zambiri, kampani yathu yapanga zinthu zingapo kuchokera ku 6t mpaka 200t.Kugwira kwamtunduwu ndikoyenera kwa crane imodzi, ziwiri ndi zinayi.