Theresab

I lived in Luderitz for a couple of years as my husband was the Harbour Master W.G. De Villiers and after giving birth to my third son there on Shark Island and a couple of months later we had to leave as my husband had tried to commit suicide. He left first and we followed suite. My son now is trying to get his Namibian passport which apparently we can collect next week sometime but he doesn't want to renunciate his SA passport due to the fact that he has to go where the work is as he is a deep sea diver. Would he be able to hold two passports being Namibian and South African and how do we go about this?