Lisa Festervoll, among the crew, said the whole boat shook, 'hit hard and quickly'. Orcas rocked the helm and the rudder, and the boat began turning in circles

The coast guard swept in on Monday to save four people on a sailboat in Costa da Caparica, near Lisbon, that had suffered 'successive collisions with the bow caused by orcas'

Lisa Festervoll, among the crew, said the whole boat shook, 'hit hard and quickly'. Orcas rocked the helm and the rudder, and the boat began turning in circles

Elise Wurschmidt was on a day trip with two friends and their captain when the boat was attacked by killer whales on Saturday, September 13.