Unexploded Ordnances
Unexploded ordnances are explosive weapons (bombs, bullets, shells, grenades, mines, etc.) that did not explode when they were employed and still pose a risk of detonation, potentially many decades after they were used or discarded. Sea disposal of munitions was an accepted international practice until 1970, when the Department of Defense prohibited the practice, and Congress followed up by passing the Marine Protection, Research, and Sanctuaries Act in 1972, generally banning sea disposal.

This is NOT a complete collection of unexploded ordnance on the seafloor, nor are the locations considered to be exact. The presence and locations of the unexploded ordnances have been derived from graphical representations recorded on NOAA Raster Navigation Charts.
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