A commenter suggests that the cruiser-submarine concept survives in SSGNs, noting that some early missile boats had to surface to launch just as older boats surfaced to use guns. Guided-missile submarines come closest to the intended capability. The continuity lies in a large boat carrying a strategically useful weapon load, not in copying the interwar gun turret. The comparison also shows how a platform concept can precede the weapon technology that finally makes it effective.
Notable Point · 1:51:20-1:51:41
Guided-missile submarines are the closest modern cruiser-submarine analogue
A brief follow-up identifies nuclear guided-missile submarines as the closest modern analogue to the interwar cruiser-submarine idea.