Bismarck and Tirpitz each required several years from laying down to commissioning even under an accelerated program, casting doubt on Plan Z's much larger timetable. The projected H-class carried eight 16-inch guns at about 53,400 tons standard displacement and used twelve diesel engines to reach a planned 19,200-nautical-mile range at 19 knots. For its exceptional size, the design was conventional, while its range was another requirement hung on a Christmas-tree project. That endurance makes sense for an independent raider, but a battleship was too valuable to expose repeatedly without overseas bases or dependable repair facilities. Damage that would be survivable near friendly dockyards could instead produce a cumulative death by a thousand cuts.
Notable Point · 1:09:20-1:14:58
H-class scale, range, and the raiding contradiction
The H-class combined enormous displacement and transoceanic range with a conventional armament, then assigned that high-value investment to commerce raiding without secure overseas support.