The variants are close in length and share a combined diesel-electric and gas-turbine arrangement, but their full-load displacement and manning differ. Their published range is broadly similar, while cautiously stated top-speed figures leave some performance deliberately unspecified. The Canadian fleet problem is used to show why nominal fleet totals do not equal ships immediately available: training, transit, refit and diplomacy all consume hulls. Comparing the figures makes force availability a central part of ship design rather than an afterthought.
Notable Point · 14:01-17:16
What the three variants share in hull and endurance
Size, displacement, propulsion, range and crew figures reveal a common design family shaped by different national availability problems.