On 22 September Roche got underway for Tokyo Bay as escort for the . Just a few minutes after morning quarters on 29 September, a loud explosion shook the ship from stem to stern and was immediately followed by another. Battle stations were manned before it was learned that the ship had struck a floating mine.
On September 22, Roche set sail for Tokyo Bay as an escort. Shortly after morning quarters on September 29, the ship experienced two explosions: one from bow to stern and another immediately following. Battle stations were activated before it was determined that the vessel had struck a mine.