Discover one of the most detailed and informative breakdowns of Replenishment At Sea (RAS) ever captured on video. This master class takes you aboard HMCS Winnipeg, a Halifax-class frigate of the Royal Canadian Navy, as it conducts a precise and high-stakes underway replenishment (UNREP) with the Combat Support Ship Asterix. From approach maneuvers to fuel line connection and safety procedures, this video explains every critical step of naval replenishment operations at sea — a key element of sustained maritime power projection. Whether you’re a military enthusiast, naval professional, or student of naval strategy, this comprehensive video gives you a rare, close-up look at the coordination, skill, and technology involved in refueling warships at sea.