This was probably done to prevent an "act of revenge" by members of the ship's company, and therefore could not be entrusted with the task in days gone by.
Mhlawumbi oku kwakusenzelwa ukunqanda "isenzo sokuziphindezela" kwamalungu aliqela lenqanawa, ngako oko ayengenakuthenjwa ngomsebenzi njengokuba iintsuku zihamaba.