Unbeknownst to the two adversaries , their carriers were only 70 nmi ( 130 km ) away from each other by 20 : 00 that night .
TF 17 then turned to head northwest towards Rossel Island in the Louisiades .
Unbeknownst to the two adversaries , TF 17 's carriers were only 70 nmi ( 130 km ) away from each other by 20 : 00 that night .
TF 17 then turned to head northwest towards Rossel Island in the Louisiades .