HMS Queen Elizabeth is among the ships affected.
More than 100 people have tested positive for Covid-19, after an outbreak at sea.
The UK's newest aircraft carrier HMS Queen Elizabeth is among the ships affected - it's about a quarter of the way through a 28-week deployment.
The British defence secretary says there are no current plans to re-think its voyage.
A number of crew members on four accompanying British ships also caught Covid.
HMS Queen Elizabeth: Covid outbreak on Navy flagship https://t.co/X0HJmmco8X
— BBC News (UK) (@BBCNews) July 14, 2021
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