 Nyorai kupfuurira kweiyi ndima - Pana April 10, 1963, Thresher yakanyura mukati mekuedzwa kwekudonha kwakadzika kumabvazuva kweCape Cod, Massachusetts, ichiuraya vashandi vose 129 nevashandi vechikepe vaiva muchikepe. Ndicho chiitiko chechipiri chinoparadza zvikurusa chechikepe chepasi pegungwa chakanyorwa, pashure pokurasikirwa kwechikepe cheFrance chepasi pegungwa Surcouf, umo vashandi 130 vakafa. Kurasikirwa kwaro kwakanga kuri chiitiko chinokosha kuU.S. Navy, kuchitungamirira kukuitwa kwepurogiramu yakaoma yokuchengetedza ngarava dzepasi pemvura inozivikanwa seSUBSAFE. Ngarava yepasi pemvura yokutanga yenyukireya yakarasika mugungwa, Thresher yakanga iriwo yechitatu yengarava dzepasi pemvura ina dzakarasika nevanhu vanopfuura 100 vaiva mungarava, dzimwe dziri Argonaut, dzakarasika nevanhu 102 vaiva mungarava muna 1943, Surcouf yakanyura nevanhu 130 muna 1942, uye Kursk, iyo yakanyura nevanhu 118 vaiva mungarava muna 2000. 