The comparison with Incomparable pauses over the disliked main-turret position between the superstructures of G3 and N3. F3 offered a more conventional alternative, with its third turret superfiring aft. The design was associated with a very large 15-inch gun, possibly a 50-calibre weapon developed along the same general path as Japan's Number 13 class. Had Britain adopted it, later modernization might have raised the question of rearming older 15-inch capital ships. Turret layout and gun development therefore influenced long-term fleet standardization.
Notable Point · 3:34-5:39
F3 and the 15-inch alternative to all-forward turrets
The F3 alternative shows that Britain's postwar capital-ship choices included a conventional superfiring layout and a powerful new 15-inch gun rather than only the G3, N3, and Nelson arrangements.