These consist of alongside trials, testing and tuning, followed by sea trials during which all systems are tested at their optimum performance limits.
Olu vavanyo lwenziwa nangalawo asemacaleni, uvavanyo kunye nokukhetha, kulandelwe luvavanyo lwaselwandle apho zonke iinkqubo zithi zivavanywe khona kolona nyino lokulunga kwalo.