The ship was then boarded by sailors from "U-255" on 13 July; after taking the ship's documents and flag, "U-255" gave "Potter" the "coup de grace" with one torpedo.
The ship was then boarded by sailors from "U-255" on 13 July. "U-255" gave "Potter" the "coup de grace" with one torpedo. U-255 "was taking the ship's documents. U-255" was taking flag.