▁As ▁the ▁sub marine ▁continued ▁to ▁d ive , ▁shell s ▁were ▁heard ▁striking ▁her ▁h ull . ▁Upon ▁sur f acing , ▁it ▁was ▁found ▁that ▁her ▁pressure ▁h ull ▁had ▁not ▁been ▁dam aged , ▁but ▁a ▁heavy ▁oil ▁s lick ▁indicated ▁a ▁pun ct ure ▁of ▁a ▁fuel ▁oil ▁ball ast ▁tank . ▁Minor ▁rep airs ▁were ▁made . ▁Two ▁wounded ▁en list ed ▁men ▁were ▁transferred ▁to ▁sub marine ▁tender ▁ ▁at ▁Maj uro ▁At oll ▁on ▁ 1 3 ▁June , ▁and ▁Sn apper ▁continued ▁her ▁lif egu ard ▁duty ▁until ▁returning ▁to ▁Pear l ▁Har bor ▁on ▁ 2 1 ▁July . ▁ ▁On ▁ 5 ▁September , ▁Sn apper ▁depart ed ▁Pear l ▁Har bor ▁for ▁her ▁ele vent h ▁and ▁final ▁war ▁pat rol , ▁conducted ▁in ▁the ▁Bon in ▁Islands ▁area . ▁On ▁ 1 ▁October , ▁the ▁sub marine ▁encountered ▁two ▁enemy ▁vessels ▁esc orted ▁by ▁a ▁small ▁pat rol ▁craft . ▁The ▁sub marine ▁fired ▁her ▁bow ▁tor ped o es ▁at ▁the ▁large ▁target ▁then ▁sw ung ▁for ▁a ▁" down - the - th ro at " ▁shot ▁at ▁the ▁smaller ▁vessel . ▁H its ▁were ▁scored ▁on ▁both ▁vessels ▁resulting ▁in ▁the ▁s inking ▁of ▁the ▁passenger - c argo ▁ship ▁Se ian ▁Mar u , ▁and ▁the ▁coast al ▁min el ayer , ▁A ji ro . ▁Sn apper ▁then ▁took ▁up ▁lif egu ard ▁station ▁off ▁I wo ▁J ima ▁until ▁ 1 8 ▁October ▁and ▁terminated