OK, this is the Latecoure 631, a very large 6 engine flying boat. There was one prototype and 10 production aircraft built. Now, on to the losses:
1--#3 was lost off Cape Ferret, France
2--#6, owned by Air France, lost 1200 miles from Dakar in the Atlantic. This aircraft was flying to Port Etienne, Mauritania when it went down at sea. Four days after it went down, a USCG ship found debris but no survivors. All 52 people on board were lost.
3--#7, owned by Latecoure, lost at sea, undisclosed location
4--#8, owned by France-Hydro, lost in Cameroon
Power was 6 Wright Cyclone engines.