Luftwaffe Torpedo Operations 1936-40.
The first operation use of airborne torpedoes by the Luftwaffe was in the Spanish Civil War. From mid 1936 a small number of Heinkel He 59 seaplanes served with the Seeflieger Gruppe AS/88 of the Condor Legion, operating from the island of Majorca. This unit was operational until the spring of 1939, and during this time launched a number of airborne torpedoes in combat. However due to problems with the LT F5 torpedo only one was successful. An attack on the British merchant ship Thropeness (4,700 GRT) which on the night of 21st July 1938 was entering the Spanish port of Valencia loaded with grain. At the time it was claimed by the Spanish Nationalists that this ship had been sunk by a mine.
By the start of WW2, the Seeflieger possessed 30 operational He 59s in four Staffeln. At this time the He 115 was starting to come into service, but due to the fragility of the LT F5 torpedo it couldn't be carried, as the He 115 couldn't fly slow enough, without stalling, to release the LT F5 torpedo successfully.
From October 1939 the few He 59s flew a limited number of torpedo operations against Allied shipping, but the only success recorded by He 59s using torpedoes in WW2 was the sinking of the British fishing steamer, Active (185 GRT) on the 18 December 1939.
In March 1940 with technical improvements to the LT F5 torpedo (including a new rudder) the He 115 was made operational with this torpedo, replacing the He 59 in the role, though the torpedo was still far from satisfactory, as it still required the He 115 to fly as slow and low as it possibly could, and even then failures were common.
Over the next few months due to limited available supplies of the torpedo (135 in March) few operations were undertaken.
In July 1940 the only operational airborne torpedo Staffel ready for action was 3/Ku.Fl.Gr 506 based at Stavanger, to be followed by 1./Ku.Fl.Gr 106 from mid August based at Norderney
From August as other He 115 torpedo attack units became operational, combat sorties increased though the limited number of torpedoes available was always a problem ( in September the figure was down to 38 at one point)
The first successes of the He 115 units may have been the sinking of Llanishen (5,035 GRT) and the Makalla (6,680 GRT) of Convoy CA 203 in the Moray Firth on the 23 August 1940, but some sources put their loss down to bombs not torpedoes.
The first confirmed success of He 115 torpedo bombers was the sinking of the Remuera (11,445 GRT) by Ku.Fl.Gr 506 on the 26 August 1940.
Over the next 4 months until the end of the year the Luftwaffe used about 160 airborne torpedoes in operations against British shipping in Northern waters, Luftwaffe claims were high (one unit alone, 3./Ku.Fl.Gr 506 was credited with sinking 124,000 GRT) but when checked against British losses, Luftwaffe torpedo bombers probably sank a total of 7 or 8 Allied merchant ships of around 50-60,000 GRT in 1940.
During this period there were attempts to use both the He 111 and Ju 88 in the torpedo bomber role, but due to problems with inter service rivalry, and the LT F5 torpedo, none became operational in 1940, though the He 111 did become operational as a torpedo bomber in early 1941.
Source for the facts and figures used in this article
Luftwaffe Aerial Torpedo Aircraft and Operations in World War II, by Harold Thiele
The first operation use of airborne torpedoes by the Luftwaffe was in the Spanish Civil War. From mid 1936 a small number of Heinkel He 59 seaplanes served with the Seeflieger Gruppe AS/88 of the Condor Legion, operating from the island of Majorca. This unit was operational until the spring of 1939, and during this time launched a number of airborne torpedoes in combat. However due to problems with the LT F5 torpedo only one was successful. An attack on the British merchant ship Thropeness (4,700 GRT) which on the night of 21st July 1938 was entering the Spanish port of Valencia loaded with grain. At the time it was claimed by the Spanish Nationalists that this ship had been sunk by a mine.
By the start of WW2, the Seeflieger possessed 30 operational He 59s in four Staffeln. At this time the He 115 was starting to come into service, but due to the fragility of the LT F5 torpedo it couldn't be carried, as the He 115 couldn't fly slow enough, without stalling, to release the LT F5 torpedo successfully.
From October 1939 the few He 59s flew a limited number of torpedo operations against Allied shipping, but the only success recorded by He 59s using torpedoes in WW2 was the sinking of the British fishing steamer, Active (185 GRT) on the 18 December 1939.
In March 1940 with technical improvements to the LT F5 torpedo (including a new rudder) the He 115 was made operational with this torpedo, replacing the He 59 in the role, though the torpedo was still far from satisfactory, as it still required the He 115 to fly as slow and low as it possibly could, and even then failures were common.
Over the next few months due to limited available supplies of the torpedo (135 in March) few operations were undertaken.
In July 1940 the only operational airborne torpedo Staffel ready for action was 3/Ku.Fl.Gr 506 based at Stavanger, to be followed by 1./Ku.Fl.Gr 106 from mid August based at Norderney
From August as other He 115 torpedo attack units became operational, combat sorties increased though the limited number of torpedoes available was always a problem ( in September the figure was down to 38 at one point)
The first successes of the He 115 units may have been the sinking of Llanishen (5,035 GRT) and the Makalla (6,680 GRT) of Convoy CA 203 in the Moray Firth on the 23 August 1940, but some sources put their loss down to bombs not torpedoes.
The first confirmed success of He 115 torpedo bombers was the sinking of the Remuera (11,445 GRT) by Ku.Fl.Gr 506 on the 26 August 1940.
Over the next 4 months until the end of the year the Luftwaffe used about 160 airborne torpedoes in operations against British shipping in Northern waters, Luftwaffe claims were high (one unit alone, 3./Ku.Fl.Gr 506 was credited with sinking 124,000 GRT) but when checked against British losses, Luftwaffe torpedo bombers probably sank a total of 7 or 8 Allied merchant ships of around 50-60,000 GRT in 1940.
During this period there were attempts to use both the He 111 and Ju 88 in the torpedo bomber role, but due to problems with inter service rivalry, and the LT F5 torpedo, none became operational in 1940, though the He 111 did become operational as a torpedo bomber in early 1941.
Source for the facts and figures used in this article
Luftwaffe Aerial Torpedo Aircraft and Operations in World War II, by Harold Thiele
