I also thought they were made in Itlay ...
I just happened to be in Spain when they were filmed, out of Rota, Spain for four patrols on an FBM submarine in the late 60's and early 70's
and with 90 days to spare our blue crew even watched these same movies while on patrol.
We had Clint Eastwood all day movies on Saturday along with pop corn and ice cream.
The good ole days