German submarine U-552 was a Type VIIC U-boat built for Nazi Germany's Kriegsmarine for service during World War II. She was laid down on 1 December 1939 at Blohm & Voss in Hamburg as yard number 528,
Erich Topp (r) on U-552 in St. Nazaire in October 1941
HMCS Sackville is a Flower-class corvette that served in the Royal Canadian Navy and later served as a civilian research vessel. She is now a museum ship located in Halifax, Nova Scotia, and the last
German submarine U-552
…However, in an attack against Convoy ON 155 on 3 August 1942, the boat was nearly sunk when she was caught on the surface by the Canadian corvette HMCS Sackville. The corvette machine-gunned the submarine and hit the conning tower with a four-inch shell, causing severe damage and forcing Topp to return to base…
HMCS Sackville in October 2006, moored behind the Maritime Museum of the Atlantic in Halifax, Nova Scotia, and restored to her 1944 condition.
HMCS Sackville's summer location to the right, behind the Maritime Museum of the Atlantic at the foot of Sackville Street.
Sackville, Halifax Harbour, October 2006 showing the four-inch deck gun and Hedgehog anti-submarine mortar. The lighthouse-like structure behind the bridge contains the radar.