UB-10
... that World War I German U-boat UB-10 was credited with sinking 23 ships in a 13-day span in July and August 1915?
... that <a href="./World_War_I" id="mwEXg" rel="mw:WikiLink" title="World War I">World War I</a> <a href="./German_Empire" id="mwEXk" rel="mw:WikiLink" title="German Empire">German</a> <a href="./U-boat" id="mwEXo" rel="mw:WikiLink" title="U-boat">U-boat</a> <b id="mwEXs"><a about="#mwt50" data-mw='{"parts":[{"template":{"target":{"wt":"SMU","href":"./Template:SMU"},"params":{"1":{"wt":"UB-10"},"2":{"wt":""},"3":{"wt":"2"}},"i":0}}]}' href="./SM_UB-10" id="mwEXw" rel="mw:WikiLink" title="SM UB-10" typeof="mw:Transclusion"><i>UB-10</i></a></b> was credited with sinking 23<span id="mwEX0" typeof="mw:Entity"> </span>ships in a 13-day span in July and August 1915?