German submarine U-702 was a Type VIIC U-boat

U-boat

U-boat is the anglicized version of the German word U-Boot , itself an abbreviation of Unterseeboot , and refers to military submarines operated by Germany, particularly in World War I and World War II...

 built for the German

Nazi Germany

Nazi Germany , also known as the Third Reich , but officially called German Reich from 1933 to 1943 and Greater German Reich from 26 June 1943 onward, is the name commonly used to refer to the state of Germany from 1933 to 1945, when it was a totalitarian dictatorship ruled by...

 Kriegsmarine

Kriegsmarine

The Kriegsmarine was the name of the German Navy during the Nazi regime . It superseded the Kaiserliche Marine of World War I and the post-war Reichsmarine. The Kriegsmarine was one of three official branches of the Wehrmacht, the unified armed forces of Nazi Germany.The Kriegsmarine grew rapidly...

 for service during World War II. She was under the command of Kptlt. Wolf-Rüdiger von Rabenau.

Service

Originally serving with 5th U-Boat Flotilla a training vessel from September 3, 1941 to February 28, 1942, U-702 was transferred to the 7th U-Boat Flotilla for her official war-time service.

Twenty-one days after her transfer-March 21-, she set sail from Hamburg

Hamburg

-History:The first historic name for the city was, according to Claudius Ptolemy's reports, Treva.But the city takes its modern name, Hamburg, from the first permanent building on the site, a castle whose construction was ordered by the Emperor Charlemagne in AD 808...

on a two-day voyage to the Heligoland island chain to prepare for her first assignment. She left port on the twenty-ninth, and began her patrol of the North sea.

On the third of April, U-702 vanished. Being in the North Sea, it is possible that it was attacked by British aircraft.