This is obtained by adding to the draught moulded the distance between the moulded base line and a line touching the lowest point of the underside of the keel. This line is continued to the FP and AP, where it is used as the datum for the sets of draught marks.
Ifunyanwa ngokongeza kwi'draught' exonxwe umgama ophakathi komgca oxonxiweyo wesiseko kunye nomgca orhweca indawo eyeyona ingaphantsi yecala elingaphantsi lesiseko senqanawe.