The rescue call was made from a 55-metre commercial fishing vessel to the Joint Rescue Co-ordination Centre early Tuesday.
A crew from the centre's Cormorant helicopter responded and managed to lower two rescue technicians, including Sgt. Shawn Harrison, to the deck of the boat to help with the evacuation.
Harrison says the tricky part was getting on board because of the three-metre sea swells.
Once on the ship, Harrison says the duo managed to load the patient in a basket and raise him to the chopper within five minutes.
The ailing crewman is now in stable condition in hospital.
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