About the Ifremer, and for the anedocte, if you go here:
Localisation des navires océanographiques de l'IFREMER
you will notice that the "Pourquoi pas?" is shown at Cabo Verde and she has not moved from there since the beginning of June...
All I can read is :
No position during the search period
... you won't know it if I'm getting or have been stationary ...