If the chain plates for both upper and lower shrouds were not electrically connected to the keel during construction, then a grounding cable must be retrofitted, also tied to the keelbolts or grounding plate.
Ukubangaba ikhono lama eangci yentambo za kubamba inqanawe eziphezulu nezingezantsi azibunga nakudityuniswa ngombane kwisiseko xana bekusakhiwa, ke intambo zaphantsi kufuneka zibenokufakelwa ngento, zibenako nekubotshelelwa kwiboliti zesiseko okanye amacangci aphantsi.