According to the African News Agency, the oil spill occurring from MV Chrysanthi S was due to a not properly closed tank valve. Although the African authorities managed to contain the oil spill, the damage had already been done.
The African safety Authority stated that they were conducting a research from the early days of July to understand where the 400 litres of oil came from. Yet, SAMSA informed that about 360 litres of oil were extracted from the ocean off Port Elizabeth.
According to Bongi...
https://safety4sea.com/open-tank-valve-resulted-to-oil-spill-in-algoa-bay/