 When the invasion of Okinawa began on 1 April, known as L-Day, the task unit was dissolved and Task Group 51.5 under Captain Frederick Moosbrugger assumed control of the screen, in the waters surrounding the island, including "Oberrender" on anti-submarine patrol.Air attacks became more frequent, but she remained untouched, driving off a Zero and a D3A Val dive bomber with her AA fire in two separate actions on 2 April.A day later, the ship stood alongside fellow destroyer escort ' was damaged by a bomb, and she temporarily left her patrol station to escort the attack transport ' into Hagushi Bay.