The discharge of part-cargoes at intermediate ports of call must be noted and sometimes the minimum depths of water which the ship may encounter at any port.
Ukothulwa kwenxenye yemithwalo kumazibuko aphakathi okumisa mayihoywe, ngamanye amaxesha ubunzulu bamanzi amancinane apho inqanawa inokuhlangana nawo nakweliphi na izibuko.