While it may have been used in expedition type voyages, I really can't see Méduse as an expedition type yacht
at all!
I wonder if this whole expedition theme is traveling the same path as 4 wheel drive Sport Utility Vehicles? In the beginning only hard core off-road drivers bought them. Then they became a "statement", and moms were buying them to run to the grocery store.
My view is that the keys to "expedition" are full displacement hull, high bow, and shortened superstructure. Absent any two of these clues, it's a motoryacht, not an expedition yacht.
Kelly