A probe is underway to determine what caused a sunset cruise catamaran to capsize near Table Bay on Monday evening.
All eight people – three male crew members and five tourist passengers from the UK - were safely rescued from the capsized vessel by the National Sea Rescue Institute (NSRI).
The NSRI says the SA Maritime Safety Authority (Samsa) will conduct a formal investigation into the incident which took place after 6pm.
The vessel was making its way back into the harbour after a sunset cruise when it apparently flipped over.
NSRI spokesperson Craig Lambinon says the passengers were treated for mild hypothermia and moderate injuries.
He says they were taken to hospital as a precautionary measure, one woman is believed to have fractured her shoulder.
Lambinon commended the quick response time and thanked a police dive unit, EMS rescue squad and Cape Town Fire and Rescue Services dive unit for also being on stand-by.
It's understood that the skipper of the chartered boat saved the life of one of the passengers who was trapped underneath the boat.
Last year, a Robben Island ferry took on water and started sinking in the Cape Town harbour.
Meanwhile, Western Cape Economic Opportunities MEC Beverley Schäfer says a formal investigation is important to determine the cause of the incident and implement preventative measures in the future.
She says that local government cannot afford for such incidents to happen and that government "will come down hard" should it be found that negligence was a factor in the incident.
Table Bay got the call from port control at about 18;49, reporting that there were people in the water at a boat that had capsized in the channel at the Port of Table Bay.— Craig Lambinon, NSRI spokesperson
The NSRI Table Bay crew got to the scene and found all eight people on the upturned hull of the boat.— Craig Lambinon, NSRI spokesperson
Listen to the discussion on The Pippa Hudson Show:
Image credit: NSRI website
This article first appeared on CapeTalk : Cause of capsized catamaran outside CT harbour under investigation