The answer to question #1 is definitely Stephen (or Stefan) Schnabel.
I'm afraid I don't have any other info regarding the supporting players you mentioned, apart from the fact that Robert Meltzer plays the mostly silent crewman with the dark moustache (he's the one who takes Cotten's bags when boarding the ship and is later seen serving food in the dining area).
An interesting aside: Welles scripted a new ending to JOURNEY INTO FEAR while in Brazil which he hoped to shoot in Rio and match with footage shot in Hollywood (this was never done). Since the new ending would feature Haki being interviewed by a number of journalists, Welles intended to cast his various IT'S ALL TRUE production assistants and crew as reporters. Richard Wilson would have played the lead journalist. In a handwritten note scribbled in the margin of the script, Welles comments that Meltzer could play another reporter "if he agrees to shave the moustache"!
Last edited by Roger Ryan
on Thu May 22, 2008 4:38 pm, edited 1 time in total.