The National Sea Rescue Institute embarked on a search for at least nine people on Thursday morning, between Oudekraal and Mouille Point, on the Cape Town coast.
According to NSRI spokesperson Craig Lambinon, an inflatable boat was located and was suspected to have capsized between Clifton and Oudekraal in the early hours of Thursday morning.
Riaan Grobler from News24 reports that an unknown number of people have come ashore and are receiving medical treatment.
Various emergency service providers, as well as the South African Air Force and the SAPS, are assisting in the operation.
According to the report, the vessel has been located 3.7km from the coast at Mouille Point and is being towed ashore.