The baseline is the location where Z=0 in the coordinate system. Normally, this is where the bottom of the boat or the keel is located. During the design process, however, the position of the keel may change, but the baseline is always at the Z=0 position.
Le yindawo apho u-Z=O. Okuqhelekileyo kukuba kulapho umphantsi wenqanawe okanye isiseko senqanawe sikhoyo. Ngexesha lokwenziwa kwenqanawe, isikhundla sesiseko senqanawe siyatshintsha, kodwa yona I-"baseline" isoloko ikwisikhundla esinguZ=O.