The crew from the Royal Navy swooped in on Havering College, east London, on Monday to visit students on the public services course, which is designed to prepare them for careers in anything from the police and fire services to the armed forces.
Three officers from 771 Naval Air Squadron answered questions and showed them around the seven-tonne aircraft before the Royal Marines put students through a gruelling fitness session.
Jonaide Baig, one of the students, said: "It was fascinating and a real adrenalin rush to see the helicopter land. I'm sure it'll be a once in a lifetime experience for many who saw it."
Search and rescue pilots typically complete about three years of training before working on the frontline.