I hate to ruin the surprise but it is an old bug of the Aquitania , being left dead in the water behind convoys.
But , two of them in a single convoy , is something I have never seen so far.
Indeed , SH3 is full of surprises.
As for the Queen Mary , the best place to find her are grids AD 59 and AD 83. She will part of heavily escorted convoys - 8 warships
If you run at her alone don't bother chasing her: She is capable of more than 25 kts speed.
An old screenshot of RMS Queen Elizabeth
