By 2009 , the U.S.A. detected as many as 60 narco submarine related events .
U.S.A. was calculated that they were moving as much as 330 metric tonnes of cocaine per year .
By 2009 , the U.S.A. detected as many as 60 narco submarine related events , and it was calculated that they were moving as much as 330 metric tonnes of cocaine per year .