os ▁T os chi ). ▁ ▁September ▁ 2 4 , ▁ 1 9 4 0 : ▁The ▁Italian ▁sub marine ▁, ▁commanded ▁by ▁Commander ▁Jun io ▁Val er io ▁Borg h ese , ▁depart ed ▁La ▁Spe zia ▁carrying ▁three ▁man ned ▁tor ped o es ▁and ▁four ▁cre ws , ▁for ▁a ▁planned ▁attack ▁on ▁the ▁British ▁naval ▁base ▁at ▁Gib ral tar . ▁ ▁The ▁operation ▁was ▁cancel led ▁when ▁the ▁British ▁fleet ▁left ▁har bour ▁before ▁the ▁sub marine ▁arrived . ▁ ▁October ▁ 2 1 , ▁ 1 9 4 0 : ▁Sc ir é ▁depart ed ▁La ▁Spe zia ▁and ▁sa iled ▁again ▁to ▁Gib ral tar ▁carrying ▁three ▁man ned ▁tor ped o es ▁and ▁four ▁cre ws . ▁The ▁Dec ima ▁M AS ▁f rog men ▁entered ▁the ▁har bour , ▁but ▁were ▁unable ▁to ▁attack ▁any ▁ships ▁due ▁to ▁technical ▁problems ▁with ▁the ▁tor ped o es ▁and ▁breath ing ▁equipment . ▁Only ▁one ▁human ▁tor ped o ▁managed ▁to ▁get ▁close ▁to ▁a ▁target , ▁the ▁batt les hip ▁Bar ham . ▁The ▁charge ▁expl oded ▁but ▁did ▁not ▁cause ▁significant ▁damage . ▁The ▁two ▁crew men , ▁G ino ▁Bir ind elli ▁and ▁Dam os ▁P acc agn ini , ▁were ▁captured ▁by ▁the ▁British . ▁The ▁other ▁four ▁( including ▁T ese o ▁T ese i ) ▁manage ▁to ▁reach ▁Spain ▁and ▁returned ▁to ▁Italy . ▁ ▁Val u able ▁experience ▁was ▁gained ▁in ▁this ▁operation ▁by ▁the ▁Dec ima .