On 5 July 1942, the German battleship Tirpitz was attacked by the Soviet submarine K-21.
Notes on verification
Confirmed by multiple independent sources including uboat.net naval database, Wikipedia, and detailed historical analysis. All agree on date, submarine, target, and torpedo count; the attack is unambiguous, though the claimed hit/damage to Tirpitz is disputed and not substantiated by German records. [tier=unverified indep_score=0.3 clusters=3 claim_tier=notable] [rescored 2026-09-15: curated origin-host map (PR #65); unclassified hosts no longer scored as aggregators]
Sources
- Attack on the battleship Tirpitz by submarine K-21 (wikipedia)
- https://uboat.net/allies/warships/ship/5126.html (corroboration)
- https://military-history.fandom.com/wiki/Soviet_submarine_K-21 (corroboration)
- https://warhistory.org/@msw/article/k-21-versus-bb-tirpitz (corroboration)