IRISH Naval Vessel LÉ Niamh rescued 225 people off the Libyan coast as part of an Italian coastguard Operation.
The vessel was asked to attend the scene by the Italian Marine Rescue Co Ordination Centre (MRCC) on Saturday evening.
The crew brought 107 migrants aboard about 112km northeast of Tripoli.
Another 118 migrants on a separate boat nearby were then rescued in the early hours of Sunday morning.
There were 12 children amongst the migrants attempting to cross the Mediterranean Sea on two inflatable vessels.
Around 2,000 migrants and refugees were rescued on Saturday night, according to the Italian coastguard.
It was one of the largest one-day operations it had organised.
The LÉ Niamh has rescued almost 2,000 migrants since it was deployed to the Mediterranean Sea on July 10.