The surviving command dates cluster in July and August 1940, after much of the physical conversion had been completed. Glengyle and Glenroy received their named captains in July, while Glenearn's appointment followed in August, although other officers may have served aboard earlier. A finished hull still needed a command team, trained sailors, landing-craft personnel, weapons, and crews able to operate those weapons. Rapid structural work therefore has to be distinguished from the slower process of turning a converted merchant ship into an operational naval unit. That readiness lag helps explain why the ships could not participate in the Norwegian campaign despite the early conversion timetable.
Notable Point · 42:28-45:23
Conversion completion did not mean immediate readiness
The hull conversions moved quickly, but captains, trained crews, and complete weapons fits still governed when the ships could enter operations.