How often have manning shortages troubled the Royal Navy?
Short answerAlmost continually; the deeper problem is having enough correctly trained and experienced personnel.
NotesManning pressure is a near-constant peacetime and wartime naval problem. Reaching a nominal headcount does not solve it. Ships require the correct mix of specialties, qualifications, and experienced sailors in each department. A fleet can possess enough people in aggregate while still being unable to crew particular hulls safely and effectively. Readiness therefore depends on skills distribution as well as recruitment.