Construction numbers in fleet context

The class began with Triton, laid down in 1936 and commissioned in 1938, and ultimately comprised 53 delivered boats from 62 orders across five construction programs. Those totals cannot be read as a simple measure of British enthusiasm for submarines. The Royal Navy had to divide construction among carriers, capital ships, cruisers, escorts, landing craft, and submarines, unlike Germany's increasingly submarine-centered oceanic attack effort. Germany eventually relied on U-boats as its principal means of oceanic attack, while Britain maintained several different striking systems. A raw British-German submarine-count comparison is therefore a category error unless force structure, missions, and competing shipbuilding demands are included.