10 June 2022 U.S. National Ice Center Confirms A-74 Iceberg Split Near Berkner Island U.S. National Ice Center (USNIC) confirmed iceberg A-74 (Fig. 1) split, or calved, into two icebergs—identified as A-74A and A-74B—near Berkner Island in the Weddell Sea, June 7, 2022. A-74A was centered at 76° 55' South and 45° 54' West , measuring 28 nautical miles on its longest axis and 18...