The treaty labels of light and heavy cruiser obscured the different jobs Britain still expected cruisers to perform. Before the treaty system, labels such as armoured, protected, and scout cruiser made those mission differences more explicit. Earlier D- and E-class ships show the distinction: larger cruisers could provide a visible presence and protect trade, while more specialized ships could concentrate on commerce warfare. The Leanders emerged from a navy that needed ships for global wars and distant stations. Their formal light-cruiser category says less about them than the work they were designed to do.
Chapter · 2:10-6:35
Why a global navy needed more than one cruiser type
The 1930s Royal Navy had to cover trade protection, economic warfare, Mediterranean duties, and worldwide presence with distinct cruiser designs.