Patrol info for U-99
Date lookup for 21 Jun 1940
| Departure | Arrival / Fate | Duration | ||
| 18 Jun 1940 | Kiel | 25 Jun 1940 | Wilhelmshaven | 8 days |
Commander | Officers * | |
 Kptlt. Otto Kretschmer |
1WO Oblt. Klaus Heinrich Bargsten |
2WO Ltn. Horst Elfe |
Left Germany for a patrol in the North Atlantic, but while still in the North Sea a crew member became ill and the boat set course on Bergen to land him there. On 22 June, they transferred the ill crewman to Stör off Børnestangen, Norway. But en route U-99 had damaged when attacked in error by own aircraft and was forced to abort the patrol. Its arrival in Wilhelmshaven was delayed by fog and an Allied air attack on the harbour.
U-99's position on 21 Jun 1940
Ships hit by U-99 on this date
General Events during this patrol
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Attacks on U-99 during this patrol
21 Jun 1940
While inbound to Bergen with a medical casualty U-99 sailed into the path of the German battlecruiser Scharnhorst, whose Ar196 scout plane mistook the boat for a British submarine and attacked, causing damage that forced the boat back to Germany for repairs. (Sources: Blair, vol 1, page 171)
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* These are officers that later became commanders themselves.