Could it be a Hell Diver (IIRC a Douglas aircraft) which the Navy was flying in the Palaus in 1944? It looks like a twin seat dive bomber to me.
Yes, it’s pretty wide. Those old WWII aircraft were pretty tight fitting. When I look at the guy in the boat, this one looks like it could have fit two guys side by side, actually.
But I’m done speculating. It was a fun exercise, but we’ll find out soon enough. If someone were paying me by the hour to do it, that would be different.