▁to ▁the ▁Az ores ▁for ▁operations ▁during ▁June ▁and ▁July . ▁During ▁the ▁latter ▁month , ▁she ▁also ▁assist ed ▁in ▁placing ▁a ▁def ensive ▁chain ▁across ▁the ▁har bor ▁at ▁Pont a ▁Del g ada . ▁ ▁While ▁in ▁Pont a ▁Del g ada , ▁the ▁large ▁German ▁cru iser - type ▁U - bo at ▁SM ▁U - 1 5 5 ▁bomb arded ▁the ▁port ▁on ▁July ▁ 4 ▁at ▁ 3 ▁a . m . ▁The ▁resulting ▁attack ▁dam aged ▁several ▁buildings ▁and ▁killed ▁four ▁civ ili ans . ▁ ▁To ▁the ▁surprise ▁of ▁the ▁German ▁U - bo at ▁company , ▁as ▁they ▁did ▁not ▁see ▁Or ion , ▁Or ion ' s ▁company ▁respond ed ▁with ▁its ▁ 3 - inch ▁gun ▁and ▁engaged ▁in ▁a ▁gun ▁du el ▁with ▁the ▁U - bo at ▁for ▁about ▁twelve ▁minutes . ▁ ▁Ne ither ▁vessel ▁hit ▁the ▁other , ▁but ▁U - 1 5 5 ▁eventually ▁with d rew ▁from ▁the ▁action . ▁The ▁Portuguese ▁government ▁later ▁awarded ▁Or ion ''' s ▁company ▁the ▁Order ▁of ▁the ▁Tower ▁and ▁S word ▁in ▁thanks . ▁ ▁Return ing ▁briefly ▁to ▁Ham pton ▁Ro ads , ▁Or ion ▁depart ed ▁again ▁on ▁ 1 8 ▁August ▁and ▁carried ▁coal ▁and ▁draft s ▁of ▁men ▁to ▁Bah ia , ▁Brazil ▁for ▁further ▁transfer ▁to ▁Frederick , ▁Mount ▁Baker , ▁and ▁. ▁During ▁the ▁fall ▁she ▁served ▁on ▁the ▁east ▁coast ▁from ▁Nor folk ▁to ▁Boston , ▁then , ▁in ▁January ▁ 1