HMS Leander was completed in 1963 as the first ship of the Leander Class Improved Type 12 General Purpose Frigates. In 1974, she joined the 3rd Frigate Squadron, which included other Leander-class frigates. The design was the most successful Western frigate of its time and led to several new international designs. This book presents an overview of the development and operational use of HMS Leander with many photos and illustrations.