N0 one was looking for them and their location was unknown. They were on a secret mission to deliver the A bomb. That is why no one knew where they were.
= = = = = = = = = = = = = =
Not quite.
They had already delivered the components and were enroute to Australia(?) with no escort.
The skipper of the Japanese Sub that sank them was called as a witness at Capt McVay(sp?)Courts-Martial
And she wasn't zigzagging