Question:
Who was the owner of USS Abatan in May, 1962?

Context:
 USS Abatan is owned by United States Maritime Commission from Jun, 1944 to Nov, 1944. 
 USS Abatan is owned by United States Maritime Administration from Jul, 1960 to Sep, 1962. 
 USS Abatan is owned by United States Navy from Sep, 1962 to Jan, 1980.

Answer:
United States Maritime Administration