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

€5.6BN Stolen From Cryptocurrency Platform By Hackers
Exit Polls Suggest No Clear Winner In Israeli Election
Netanyahu Seeks Another Term As Israeli Elections Get Underway
Russian Strikes Leave 600,000 People Without Power
Robert Pether Returning To Ireland After Five-Year Iraqi Detention