Gabriel Gatehouse below deck on the migrant boat
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Hundreds of migrants crammed in wooden fishing vessel

British and European warships are once again conducting search and rescue missions in the southern Mediterranean.

The operation known as Mare Nostrum was stopped last year and during that time one boat stepped in to fill the void - a retired fishing trawler specially converted to a search and rescue ship.

It is run by a privately-funded organisation called MOAS - Migrant Offshore Aid Station, the BBC's Gabriel Gatehouse got exclusive access to one of the biggest rescue operations in recent years.

  • 08 Jun 2015
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