The S class occupied the middle position in the Royal Navy's three-part submarine force, and its medium size opened a wider range of missions. The U class emphasized underwater hunter-killer performance, while the larger T class carried a much heavier torpedo battery. Six bow tubes still gave the S class meaningful striking power, with reloads allowing repeated salvos while retaining weapons for a snap shot. Its capacity for extra personnel also supported special operations and other work beyond straightforward patrols.
Chapter · 1:33-5:58
Why the S class was the Royal Navy's submarine all-rounder
The S class occupied the middle ground between specialized U-class hunter-killers and the larger, heavily armed T class.