What a Tunguska-scale blast could teach a navy

Where would the 1908 Tunguska impact need to happen to benefit naval technology most?

A naval proving ground with armor and other relevant material could yield useful damage evidence while avoiding the deliberate exposure of people aboard an active fleet.

Damage to ships could expose weaknesses in subdivision or cause a navy to question its armor quality. The answer nevertheless prefers avoiding the loss of life such an event would cause. A naval proving ground containing armor and other relevant material offers a hypothetical way to obtain evidence with fewer human consequences. Investigators could study the damage, although the first lessons would initially be available to one navy and would take time to reach others.