Excuse me if this topic has been covered. The area in the mid Atlantic called the black hole out of range for land based aircraft to hunt U boats. The CVEs carried about 20 or so aircraft and provided air coverage in this area to hunt U boats. CVE USS QUADALCANAL attacked U 505 which surfaced damaged and was taken over by US NAVY sailors before the GERMANS could scuttle it. The U 505 is at the Museum of Science and Industry in Chicago.