Hi Igor!
Nose of plane is smashed in crash. When I saw it first, I was sure that we found Savoia also crashed in this area, which have hole on place of third engine in front. Secont thought was Bristol Beaufighter, engines looks very alike. Later we realised that it plane is lying upside down, with smashed front cabin. Measuring wings (66 feet) was one of the first signs what plane it could be. I can say that I am expert in recognizing fish, but not submerged aircrafts. Let's say that 3/4 of fuselage is there, but there is over half century fat layer of algae on whole body of aircraft. We have only few minutes of dive at that deep, so it is impossible to wipe out corrosion even from the smallest part on the plane. Grabbing on one part of wing, we noticed yellow paint. This is very hard way to find some marks on plane.
Our idea was in easier way to find out in papers/internet what MIA it was, not to make forensic investigation under sea -problem is very-deep diving.