Search and rescue technicians performed hoist operations to transfer a person with medical concerns from a vessel east of St. John's Saturday afternoon.
According to the Joint Rescue Co-ordination Centre in Halifax, a Cormorant helicopter was dispatched from 103 Squadron in Gander.
The helicopter conducted the hoist on a vessel more than 400 kilometres off the coast of St. John's.
The male patient, 30, was transferred to St. John's to receive medical treatment.
There is no word yet on his condition.