When disposing of ammunition, it should ideally be in water at least how many fathoms deep?

When disposing of ammunition, the recommended depth for underwater disposal is at least 50 fathoms. This ensures that the munitions are buried sufficiently deep to prevent them from returning to the surface or being accessed by marine life, while also minimizing the risk of accidental retrieval by divers or fishing activities. The depth also aids in the attenuation of pressure and reduces the likelihood of any potential environmental impact from the ammunition. In maritime safety and environmental preservation, following the specified depth helps mitigate risks associated with underwater munitions.