If the German Navy expects to fight at Heligoland, the video suggests it could accept 18-knot battleships and retain triple-expansion machinery in exchange for armour, guns, and survivability. Fast cruisers and battlecruisers become less compelling when the battle's location is predictable. Savings on turbines and battlecruisers might instead feed a race in gun calibre, although the fleet would still consume immense resources. British battlecruisers, by contrast, could be used for a strategically mobile thrust through the Danish straits into the Baltic behind the German fleet.
Chapter · 1:30:39-1:36:53
A slower, more heavily armoured German fleet
The scenario favours German battleships optimised for armour and firepower in a known coastal battle, rather than speed and long-range cruising.