Between the wars, the Royal Navy refined sloop designs through limited orders. This kept construction skills alive and showed which equipment and hull arrangements worked. When mass production became necessary, those lessons could be transferred into quicker commercial or semi-commercial wartime designs. Sloops handled immediate naval duties while preserving a tested basis for later escort programmes.
Notable Point · 4:52-6:03
Sloops as the escort-development template
The interwar sloop programme kept small-warship design skills alive and supplied the pattern behind later corvette and frigate programmes.