Three sailors from the South African navy who were on a submarine died, and four others were injured because they were swept off the submarine‘s deck by big waves.
The boat was near Cape Town in the ocean when seven crew members were taken away by strong waves.
A helicopter was giving things to people while getting more fuel, according to the AFP news agency.
The South African National Defence Force (SANDF) said in a statement that the sailors were taking part in a navy training when the accident happened.
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The army said that all seven members were found, but unfortunately three people died, including a high-ranking officer who is in critical condition.
Five more people were rescued in another rescue mission, according to the report.
The police said they started an investigation after the accident in the navy.
The accident happened after a weekend with strong winds and rough waves. The weather service in South Africa said there would be big waves that could cause damage in Cape Town on Wednesday.
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