DD's, DE's, FM Wildcats, and TBF Avengers of the USS Block Island (CVE-21) HUK Group sank: U-220, U-603, U-709, U-801, U-66 (an original Drumbeat boat), and U-1059. Block Island was sunk on 29 May 1944 by U-549 which, in turn, was sunk by escort