What actually drove emergency naval recruiting?

How much did wartime battle losses contribute to the demand for impressed sailors?

Battle deaths were often less important than imprisonment and sudden strategic emergencies that prompted urgent recruiting orders.

Not every wartime manpower increase replaced men killed in battle. Wooden warships could exchange fire for long periods without sinking, and many wounds were survivable, although individual battles could still be costly. Buoyant wooden hulls and working pumps could manage many shot holes, whereas catastrophic grounding damage or an uncontrollable fire posed a greater danger. Capture and imprisonment removed sailors from the available pool for longer periods and could matter more cumulatively. An alarming report that Nelson faced a combined enemy fleet illustrates how the Admiralty could order mass recruiting while informing the government of the danger. Control of incoming news could therefore let recruiting orders go out before the wider public understood the emergency.