Battle of the Atlantic, Second World War
Image of US Merchant Navy vessel in Atlantic convoy, taken for USCGC Spenser, one of the largest cutters in the Coast Guard fleet, escorting Convoy HX-233 across the North Atlantic to the United Kingdom. This is part of a dramatic sequence of photographs documenting the attack and capture of German U-bat U-175 on April 17, 1943. More information is available on the URL link to the US Coast Guard web-site, below.
United States Coast Guard
U.S. Department of Homeland Security
This photograph is in the public domain, taken by a US Coast Guard official photographer,
Photo No. 3321
North Atlantic Ocean
USCG photographer, “Atlantic convoy,” Norumbega, accessed December 10, 2018, http://norumbega.org/items/show/6.