aki - Form osa ▁sh ipping ▁lan es . ▁On ▁ 1 ▁May ▁she ▁s ank ▁the ▁sovi et ▁merchant ▁ship ▁ ▁SS ▁Ang ar st roy . ▁On ▁ 8 ▁May ▁she ▁tor ped o ed ▁and ▁s ank ▁one ▁of ▁her ▁most ▁important ▁vict ories ▁of ▁the ▁war , ▁transport ▁. ▁Post - war ▁exam ination ▁of ▁Japanese ▁records ▁showed ▁Tai y ō ▁Mar u ▁to ▁be ▁more ▁than ▁just ▁the ▁ordinary ▁transport ; ▁she ▁was ▁en ▁route ▁to ▁the ▁East ▁Ind ies ▁with ▁a ▁group ▁of ▁Japanese ▁scient ists , ▁econom ists , ▁and ▁industrial ▁exper ts , ▁including ▁ren owned ▁hyd ra ul ic ▁engineer ▁Y o ichi ▁H atta ▁who ▁designed ▁Ch ian an ▁Ir rig ation ▁and ▁built ▁W us anto ▁Res er voir ▁in ▁Taiwan , ▁bent ▁on ▁exp edit ing ▁the ▁explo itation ▁of ▁the ▁conquer ed ▁territory . ▁Their ▁loss ▁was ▁a ▁notable ▁blow ▁to ▁the ▁Japanese ▁war ▁effort . ▁ ▁On ▁ 2 5 ▁May ▁Gren ad ier ▁was ▁di vert ed ▁from ▁her ▁pat rol ▁area ▁to ▁Mid way ▁Island , ▁where ▁she ▁formed ▁part ▁of ▁the ▁sub marine ▁pat rol ▁line ▁as ▁the ▁American ▁fleet ▁in ▁a ▁blo ody ▁but ▁brilliant ▁battle ▁handed ▁the ▁Imperial ▁Navy ▁its ▁first ▁defeat ▁in ▁some ▁three ▁hundred ▁years . ▁Gren ad iers ▁third ▁war ▁pat rol ▁was ▁in ▁the ▁Tru k ▁area , ▁heavily ▁pat rolled ▁by ▁enemy ▁ships ▁and ▁plan es . ▁Although ▁she ▁sight ed ▁some ▁ 2 8 ▁Japanese ▁ships , ▁enemy