 Following that conflict, 16 B-29 bombers were converted to full-time air–sea rescue duty and redesignated SB-29 Super Dumbo.The SB-29 served throughout the Korean War and into the mid-1950s.The SB-17 began serving in Korea, but dropped only a few lifeboats to save several lives before being phased out in late 1951—there were enough SB-29 Super Dumbos and Grumman SA-16A Albatross flying boats to satisfy the need.