I-crane yomkhumbi iyithuluzi kanye nemishini yokulayisha nokukhipha izimpahla ezihlinzekwa umkhumbi, ikakhulukazi idivayisi ye-boom, i-deck crane neminye imishini yokulayisha nokuthulula.
Kunezindlela ezimbili zokulayisha nokukhipha impahla nge-boom device, okungukuthi ukusebenza kwenduku eyodwa kanye nokusebenza kwezinduku ezimbili.Ukusebenza kwenduku eyodwa ukusebenzisa i-boom ukulayisha nokuthulula impahla, ukukhuphuka ngemuva kokuphakamisa izimpahla, ukudonsa intambo ukuze izimpahla ezine-boom zijike ngaphandle kwe-boom noma i-cargo hatch, bese ubeka phansi impahla, bese uvula i-boom. buyela endaweni yokuqala, ngakho-ke umsebenzi wokuya nokubuya.Ukulayisha nokukhipha isikhathi ngasinye ukuze usebenzise i-boom yezintambo, amandla aphansi kakhulu, umfutho wabasebenzi.Ukusebenza kwenduku ephindwe kabili enama-booms amabili, eyodwa ibekwe phezu kwe-hatch yempahla, enye i-outboard, ama-boom amabili anentambo egxilwe endaweni ethile yokusebenza.Izintambo zokuphakamisa ama-boom amabili zixhunywe ku-hook efanayo.Udinga kuphela ukwamukela nokubeka izintambo ezimbili zokuqala ngokulandelana, ungakwazi ukukhulula izimpahla kusukela emkhunjini ukuya endaweni, noma mhlawumbe ulayishe izimpahla kusukela ku-pier ukuya emkhunjini.Amandla okulayisha nokulayisha okusebenza kwenduku ephindwe kabili angaphezulu kwalawo okusebenza kwenduku eyodwa, futhi amandla okusebenza nawo alula.