The Soviet submarine K-21 fired four torpedoes at the Tirpitz from a considerable distance on 5 July 1942.
Notes on verification
Confirmed by multiple independent WWII naval history sources including uboat.net and kbismarck.com; consistent details on date, range, and outcome (all torpedoes missed). [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://www.kbismarck.com/tirpitz.html (corroboration)
- https://www.octodaydispatch.com/column_posts/world_war_ii/germans-commission-kms-tirpitz/article_8dd6e070-7227-11eb-b83d-53c8c0957780.html (corroboration)