mm43,
"Ile de Sein" departed from Dakar, Senegal for her voyage to the Recovery Operation Position (ROP).
Actually you´re right. I made a confusion; it was the Alucia that took three days from Recife to the place where it began the previous search.
What really matters to my calculations is that a ship can take 3 days to reach the brazilian port of Recife. But, as someone already said, the equipment will be sent to a French port before a plane take it to Paris. A desnecessary delay, one could say, but I understand that the french wants everything into their jurisdiction.