ON 29 JUL 1943, 279's Hudsons were involved in 3 rescues, 2 with lifeboat drops.
books.google
Dinghy Drop: 279 Squadron at War 1941-1946
MAY - OCTOBER 1943 pages 59 to 62
B-17F-80-BO 42-29981 92BG/327BS : (2 dinghies i.e 1st lifeboat drop ) source of the pic :
http://www.iwm.org.uk/collections/item/object/205023209
B-17F-25-DL 42-3119 91BG/322BS : Walruses
B-17F-105-BO 42-30450 94BG/410BS : 2nd lifeboat drop