One proposed lineage treats Cerberus as a bridge from the turret monitor to the fully steam-powered Devastation and Thunderer. Edward James Reed's breastwork solution raised the turrets above the weather deck, improved seaworthiness and stability, and avoided the weight of a sailing rig. By contrast, John Ericsson's USS Dictator retained a lower monitor approach despite its ambition as a large seagoing ironclad. Later shallow-draft American monitors had wartime coastal utility, but their retained 15-inch smoothbores limited their value by the 1880s. Re-rifled guns, Gatlings, and quick-firing weapons could have provided a practical modernization package. In this counterfactual, the ships work with torpedo boats and army forts as a harbour-defence system instead of serving as blue-water battleships.
Notable Point · 4:22-6:27
Cerberus suggests a breastwork path for American monitors
A counterfactual contrasts Ericsson's low-freeboard Civil War monitors with Reed's breastwork arrangement, then proposes modern guns and coastal integration for a longer-lived American type.