During the first days of the battle, PGM-17 spotted and destroyed several Japanese mines with small arms fire.
The countries that sign the treaty have up to 10 years to destroy mines after the treaty becomes effective.
After the war the Australian military sent teams to train Afghans in finding and destroying mines.
The five 1,000-ton, 224-foot vessels are expected to dramatically improve the Navy's ability to seek out and destroy underwater or floating mines.
However in some circumstances many minehunters can also destroy less advanced magnetic moored mines in the traditional manner.
The overpressure from the explosion destroys most mines.
Periodically, the screening destroyers found and destroyed mines drifting nearby.
Division 36 also, on D-Day minus one, destroyed mines at the landing site with gunfire, being too shallow to sweep.
During the final month of the war, she destroyed mines and rescued four downed Anzio air crewmen.
She also destroyed mines in the Yellow Sea.