|11 May 1913– 5 October 1944 (aged 31)|
|Place of birth||Döbeln|
|Place of death||near Constanţa, Romania|
|Allegiance|| Weimar Republic
|Years of service||1932–1944|
|Battles/wars||World War II|
|Awards||Knight's Cross of the Iron Cross|
Helmut Rosenbaum (11 May 1913 – 5 October 1944) was a Korvettenkapitän with the Kriegsmarine during World War II. He is also a recipient of the coveted Knight's Cross of the Iron Cross. His greatest achievement as U-boat commander was the sinking of the British aircraft carrier HMS Eagle on 11 August 1942.
Helmut Rosenbaum commissioned U 73 on 30 September 1940 after completing his first patrols in U 2. He sank one ship on his first patrol and four ships on his second patrol, the first in the North Atlantic. In February 1942 U 73 was heavily bombed during his first Mediterranean patrol but nevertheless managed to reach La Spezia.
In August 1942 Rosenbaum attempted an attack on a convoy of Operation Pedestal bound for Malta. On 11 August 1942 he made contact and fired four torpedoes at the aircraft carrier HMS Eagle sinking her in the engagement.
Helmut Rosenbaum was killed in an airplane crash on 5 October 1944 near Constanţa in Romania as commander of the 30. Unterseebootsflottille. Rosenbaum was on his way to a meeting with the commanding admiral of the Black Sea.
|Date||U-boat||Name of Ship||Nationality||Tonnage||Fate|
|24 February 1941||U 73||Waynegate||British||4,260||Sunk|
|3 April 1941||U 73||Alderpool||British||4,313||Sunk|
|3 April 1941||U 73||British Viscount||British||6,895||Sunk|
|3 April 1941||U 73||Indier||Belgian||5,409||Sunk|
|3 April 1941||U 73||Westpool||British||5,724||Sunk|
|20 April 1941||U 73||Empire Endurance||British||8,570||Sunk|
|20 April 1941||U 73||HMS ML-1003||British||46||Sunk|
|20 April 1941||U 73||HMS ML-1037||British||46||Sunk|
|11 August 1942||U 73||HMS Eagle||British||22,600||Sunk|